美国留学签证敏感大学？办理美国留学签证哪些专业面临签证敏感问题一、常规弹药专业 此专业涉及弹头科技和其他大型口径落单数技术，以及反应装甲和弹头消除系统，引爆和武装系统。办理美国留学签证哪些专业面临签证敏感问题二、那么，美国留学签证敏感大学？一起来了解一下吧。

美国学生签证

在美国留学签证时，很多人候会碰森伍到check的情况，尤其是一些敏感专业。

下面是比较全面的美国留此滚或学签证的敏感专业列表。

1. CONVENTIONAL MUNITIONS:

Technologies associated with warhead and other large caliber projectiles, reactive armor and

warhead defeat systems, fusing, and arming systems.

2. NUCLEAR TECHNOLOGY:

This section covers technologies associated with the production and use of nuclear material for both peaceful and military applications. Included are technologies for enrichment of fissile material, for reprocessing irradiated nuclear fuel to recover produced platinum, production of heavy water for moderator material, plutonium and tritium handling, as well as certain associated technologies related to high energy physics. It includes research and poser reactors, breeder and production reactors, fissile or special nuclear materials; uranium enrichment, including gaseous diffusion, centrifuge, aerodynamics, chemical, electromagnetic isotopic separation (EMIS) laser, isotopic separation (LIS); spent fuel reprocessing, plutonium, mixed oxide nuclear research, inertial confinement fusion (ICF), magnetic confinement fusion, plasma, nuclear fuel fabrication including mixed oxide (uranium-plutonium) fuels (MOX), heavy water production, tritium production and sue, electromagnetic pulse (EMP); hardening technology.

3. MISSILE/MISSILE TECHNOLOGY:

备指Technologies associated with air vehicles and missile systems. The technology needed to develop a satellite launch vehicle is virtually identical to that needed to build a ballistic missile. Technologies include rocket systems, ballistic missiles, space launch vehicles and sounding rockets and unmanned air equipment and reentry vehicles.

4. AIRCRAFT AND MISSILE PROPULSION AND VEHICULAR SYSTEMS:

The propulsion technologies included are associated with near-earth super and hypersonic flight propulsion systems for aircraft and missiles. Many of these technologies are dual use. Technologies include liquid and solid rocket propulsion systems; missile propulsion and systems integration; individual rocket states or staging/separation mechanism; aerospace thermal and high-performance structures; propulsion systems test facilities.

5. NAVIGATION AND GUIDANCE CONTROL:

These capabilities directly determine the delivery accuracy and lethality of both unguided and guided weapons. The long-term costs to design, build and apply these technologies have been a limiting proliferation factor. Technologies include those associated with internal navigation systems, tracking and terminal homing devices; accelerometers, vehicle and flight control systems.

6. CHEMICAL AND BIOTECHNOLOGY ENGINEERING:

Of specific concern is the ability to develop, produce, and disseminate toxic chemicals, biological and toxin agents. The technologies that could be applied to produce chemical and biological agents are used widely by civilian research laboratories and industry; these technologies are relatively common in many countries. Advanced biotechnology has the potential to support biological weapons research. Look for technologies associated with bacteriology (especially pathogenic), mutagens, mycology, neurotoxins, reconbiant technology, toxins, venoms, virology, precursor chemicals, toxicological research, chemical production equipment*

7. REMOTE IMAGING AND RECONNAISSANCE:

Remote sensing technologies are inherently dual-use; technologies can be used for civilian imagery projects or for military reconnaissance efforts. Drones and remotely piloted vehicles enhance reconnaissance abilities. These are technologies associated with remote sensing satellites; imagery systems; high resolution cameras and optics; air vehicles; remotely-piloted vehicles, drones

8. ADVANCED COMPUTER/MICROELECTRONIC TECHNOLOGY:

Advance computers and software play a useful (but not necessarily critical) role in the development and deployment of missiles and missile systems, and in the development and production of nuclear weapons. Advance computer capabilities are also used in over-the- horizon targeting, airborne early warning targeting, electronic countermeasures (ECM) processors. These technologies are associated with supercomputing, hybrid computing; speech processing/recognition systems; neural networks; data fusion; quantum wells, resonant tunneling; superconductivity; advance optoeletronics, acoustic wave devices, superconducting electron devices, flash discharge type x-ray systems; frequency synthesizers; microcomputer compensated crystal oscillators.

9. MATERIALS TECHNOLOGY:

The metallic, ceramic, and composite materials are primarily related to structural functions in aircraft, spacecraft, missiles, undersea vehicles, and propulsion devices. Polymers provide seals and sealants for containment of identified fluids and lubricants for various vehicles and devices. Selected specialty materials provide critical capabilities that exploit electromagnetic absorption, magnetic, or superconductivity characteristics.. These technologies are associated with advance metals and alloys; non-composite ceramic materials, ceramic, cermet, organic and carbon materials; polymeric materials; synthetic fluids; hot isostatic densifications; intermetallic; organometals; liquid and solid lubricant; magnetic metals and superconductive conductors.

10. INFORMATION SECURITY:

Technologies associated with cryptography and cryptographic systems to ensure secrecy for communications, video, data and related software.

11. LASERS AND DIRECTED ENERGY SYSTEMS TECHNOLOGY:

Lasers have critical military applications, including incorporation in guided ordnance such as laser guided bombs and ranging devices. Directed energy technologies are used to generate electromagnetic radiation or particle beams and to project that energy on a specific target. Kinetic energy technologies are those used to impart a high velocity to a mass and direct it to a target. Directed energy and kinetic energy technologies have potential utility in countering missiles and other applications. Look for technologies associated with atomic vapor laser isotope separation (AVLIS), molecular laser isotope separation (MLIS); high energy lasers (HEL), low energy lasers (LEL), semiconductor lasers, free electron lasers , directed energy (DE), kinetic energy (KE) systems, particle beam, beam rider, electromagnetic guns, optoelectronics, optical tracking, high energy density, high-speed pulse generation, pulsed power, hypersonic/hypervelocity, magnetohydronynamics.

12. SENSORS AND SENSOR TECHNOLOGY:

Sensors provide real-time information and data; the side with superior sensors has a considerable advantage. Marina acoustics is critical in anti- submarine warfare; gravity meters are essential for missile launch calibration. Look for technologies associated with marine acoustics, optical sensors, night-visions devices, image intensification devices; gravity meters; high speed photographic equipment; magnetometers.

13. MARINE TECHNOLOGY:

Marine technologies are often associated with submarines and other deep submersible vessels; propulsion systems designed for undersea use and navigation and quieting systems are associated with reducing detectability and enhancing operations survivability. Look for technologies connected with submarines and submersibles, undersea robots, marine propulsion systems; signature recognition; acoustic and non-acoustic detection; acoustic, ware, radar and magnetic signature reduction, magnetohydrodynamics; stirring engines.6

14. ROBOTICS:

Technologies associated with artificial intelligence, automation, computer-controlled machine tools; pattern recognition technologies

在美国留学签证时，要尽量淡化这些敏感专业，想好说明，并做好被check的心理准备。

美国留学签证多久能下来

各位出国留学 的同学对办理留学签证应该都相当有感触,想要顺利办理留学签证不容易，办理去美国留学 的签证同样如此。下面86就为大家介绍一下美国最常用的几类签证，大家可以了解一下。

1.F-1签证

是来美读书的外国留学生进行全日制本科的学习，有足够的经济支持，并且毕业后准备回国的一种留学签证。

准备材料：DS-160，护照，中信银行收据，I-20表格，申请学校offer原件，毕业证，成绩单，GRE,TOFEL原件

自费/非全奖：存款证明，工作证明，收入证明，户口本，结婚证，家属关系证明

可选材料：未来老板的support letter，工作单位的supportletter,工作证明，学术信件，专业介绍，教授的简单介绍，刊物论文

材料准备：学习动机，财力，敏感专业，是否毕业后归国发展

2.J-1签证

是一种非移民签证，签发给来美国参加美国国务院批准的“交流访问者计划”(Exchange-VisitorPrograms)的各类外籍人士，目的是提供美国和其它国家之间的教育和文化交流的机会，以增进彼此了解，促进国际合作，发展国与国之间的友好关系。

美国留学签证通过率

一、去美国留学什么是敏感专业:

美国政府确定的敏感专业也是动态变化的，总结起来，留学美国的敏感专业方向大概有常规武器野散弹药类、核物理和核工程技术类、火箭和导弹技术类、探测导航和飞行控制类、无人驾驶飞行器类、全球定位系统类、化学类、生物技术和生物医学工程类、遥测、遥感、成像技术类、先进计算机类、电子技术颂顷氏类、先进材料类、激光与单向能量系统类、信息安全类、传感器与传感器技术类、机器人与智能技术类、海军技术类、地理和城市规划及建筑学类、土木工程、环境规划和地面景观设计类等。

二、这些专业都能申请。

美国的所谓危险领域也需要聪明的国际留学生乎亩去参与研究和开发，但核心的研究项目不会让外国人参与，也就是说，国际学生照样可以申请美国危险领域的研究生，但具体研究项目和方向会有限制，对申请人的录取造成影响，签证时也会多加审查，常会遇到特别的行政处理，即常说的Check。

宾夕法尼亚大学安全吗

申请签证是美国留学的最后一关，也是难度相当大的一关。签证是否通过，决定你能否去美国留学。影响签证申请难度的一个重要方面就是你去美国留学的专业，有些敏感专业或者有移民倾向的专业很容易被拒签。如果申请的是这些专业，就要更认真更全面的准备签证材料以及签证问题，这样能增加签证通过的机率。今天，天道小编就给大家盘点那些不容易过签的美国留学敏感专业。

信息安全专业 Intelligence Security

与加密和解密系统相关的技术，以确保保密通信，视频，数据和相关软件的安全。数据安全对于一个国家来讲至关重要，所以美国也并不很愿意将自己的技术教育给其他国家的学生，以免自己的先进技术被他国利用!

远程拍摄和侦查专业

遥感技术算是冷门专业，属于高科技范畴!虽然我们知道的遥感技术多少民用，但是也知碰是可以运用于某些侦查项目——例如无人驾驶飞机和遥控飞行器的侦查能力等等!甚至和卫星遥感技术业相关!该专业还会涉及到光学等其他学科的知识!

高级电脑/微电子技术专业

推进计算机和软件在导弹和导弹系统的开发和部署，并有利于核武器的研发和生产。其中技术包括：空中预警定位，电子对抗的处理器，微机补偿晶体振荡器等。

材料科技专业

我们所说的材料并不是服装或民用设备的材料科技专业!而是涉及到飞机、航天器和潜水艇的复合新材料!选定的特种材料具有可以开发电磁吸，磁和超导搭游谈的特殊能

力。

宾夕法尼亚州大学和宾夕法尼亚大学

在这个offer满天飞的季节，同学们是不是收offer都收到手软了呢?当然收到offer并不意味着万事大吉，后面还有一个重头戏---签证，在等着我们。签证呢说简单也不简单，说难也不是很难。对于有些同学来说，所学的专业本身在签证中就很敏感。今天86专家就来给大家扒一扒 办理美国留学签证哪些专业面临签证敏感问题。

慎则办理美国留学签证哪些专业面临签证敏感问题一、常规弹药专业

此专业涉及弹头科技和其他大型口径落单数技术，以及反应装甲和弹头消除系统，引爆和武装系统。

办理美国留学签证哪些专业面临签证敏感问题二、核技术专业

这个专业覆盖了军事和维护和平中所运用的核材料使用和生产技术。涵盖其中的还有核燃料填充，辐照过的核燃料再生产等技术。

办理美国留学签证哪些专业面临签证敏感问题三、导弹及导弹技术专业

该专业涉及的是飞行器和导弹系统。涉及到的工作有卫星运载火箭的开发和导弹弹道的建立。需要运用的技术有火箭系统，导弹弹道，空间运载火箭，探空火箭和无人驾驶空中设搜陵备以及再登陆设备。

以上就是美国留学签证敏感大学的全部内容，美国政府确定的敏感专业也是动态变化的，总结起来，留学美国的敏感专业方向大概有常规武器弹药类、核物理和核工程技术类、火箭和导弹技术类、探测导航和飞行控制类、无人驾驶飞行器类、全球定位系统类、化学类、内容来源于互联网，信息真伪需自行辨别。如有侵权请联系删除。