查询词典 F-22

Barak's decision comes after long deliberations within IDF between the cheaper, more agile single-engined F-16, which is manufactured by Lockheed Martin, and the heavier, multi-role twin-engined F-15, manufactured by Boeing.

巴拉克的决定来，经过长期的审议，以色列国防军之间的更便宜，更敏捷，单引擎的F - 16 ，这是制造，由洛克希德马丁公司，以及较重的，多的作用，双引擎的F - 15 ，由波音公司制造的。

The appearance of the Mach 2.8-capable MiG-25 Foxbat in 1967 frightened Defense Department analysts and prompted a redirection in USAF fighter plans, with high performance once again becoming the primary concern. The F-X concept was eventually to emerge as the McDonnell Douglas F-15 Eagle, a twin-engined fighter with advanced avionics and long-range missiles.

在 1967 年马赫 2.8 与米格 25 Foxbat 的涌现使防御部门分析员感到吃惊，并推动了美国空军中的一个战斗机打算，并一度成为其时最受关注的焦点。F-X 概念是作为麦克唐纳道格拉斯 F 15 鹰最终涌现的，一架拥有高级航空电子与远程导弹的双引擎的战斗机。

The appearance of the Mach 2.8-capable MiG-25 Foxbat in 1967 frightened Defense Department analysts and prompted a redirection in USAF fighter plans with high performance once again becoming the primary concern. The F-X concept was eventually to emerge as the McDonnell Douglas F-15 Eagle a twin-engined fighter with advanced avionics and long-range missiles.

在 1967 年马赫 2.8 与米格 25 Foxbat 的出现使防御部门分析员感到吃惊2010年校园元旦对联，并推动了美国空军中的一个战斗机计划，并一度成为当时最受关注的焦点。F-X 概念是作为麦克唐纳道格拉斯 F 15 鹰最终出现的，一架拥有高级航空电子与远程导弹的双引擎的战斗机。

The twin-lens kit gives first-time users loads of flexibility too, with an excellent Zuiko 14-45mm f/3.5-5.6 wide zoom lens and a Zuiko 40-150mm f/4.5-5.6 telephoto zoom lens.

双镜头套件，让第一次使用的用户负载的灵活性，也与一个很好的zuiko 14 -四十五毫米f/3.5-5.6广泛的变焦镜头和一个zuiko 40 - 150毫米f/4.5-5.6镜头的远摄变焦镜头。

The motor is provided with a thermal motor protector (a protective device that is sensitive to both temperature and current) that prevents the temperature of the motor windings from becoming more than 125°(257°) under the maximum load C F under which the motor runs without causing the protector to cycle, and from becoming more than 150°(302° with the rotor of the motor locked; or C F) 4 The motor complies with the requirements for impedance-protected motors; b Under wiring, unless the wiring complies with the VW-1 (Vertical-Specimen) Flame Test in the Reference Standard for Electrical Wires, Cables, and Flexible Cords, UL 1581; c Under an unenclosed switch, transformer, relay, solenoid, and the like, unless it 7 舞台灯标准 can be shown that malfunction of the component does not result in a fire; or d Under field- and factory-made splices and overload and overcurrent protection devices.

F C F 4 发动机符合阻抗保护发动机的要求； b 配线，除非电线符合VW-1及参考UL 1581标准的有关电线，电缆及线芯灵活性的焰火测试。 c 未封装的开关，变呀器，继电器，螺线管及与其相似的，除非它可显示元件的故障不会引起火灾。 d 在户外和生产工厂接合过载和过流保护装置。

The mixed collectors studied were as following: benzyl arsonic acid-sodium butyl xanthate for walframite flotation, salicylohydroxamic acid-F〓, salicylohydroxamic acid-cupferron, salicylohydroxamic acid-TBP , F〓-TBP, cupferron-benzohydroxamic acid etc. for cassiterite flotation and mixed aliphatic acid or aliphatic amine for beryl or spodumene flotation.

研究过程中，本文选用了如下具体实例：苄基胂酸与丁基黄药浮选黑钨矿，水杨羟肟酸与F〓、水杨羟肟酸与铜铁灵、水杨羟肟酸与磷酸三丁酯、F〓与磷酸三丁酯、铜铁灵与苯异羟肟酸两两结合浮选锡石，混合脂肪胺与混合脂肪酸浮选锂辉石与绿柱石。

Results NGF and its mRNA were localized in chondrocytes in the sclera, especially in the binucleate cell. In NGF and its mRNA respectively, the amount of the positive cells in the occluded eyes was significantly higher than that of the control eyes (P.05). In NGF F(subscript DG=20.556, P.001 or in its mRNA F(subscript DG=25.520, P.001, the amount of the positive cells among the occluded groups or the control groups was significantly decreased along with the time.

结果 NGF蛋白及其mRNA均表达於巩膜的软骨细胞中尤其在双核细胞中；两者在各时间段遮盖眼巩膜中阳性细胞数均明显高於对照组(P.05)；免疫组织化学F(下标 DG=20.556 P.01和原位杂交F(下标 DG=25.520 P.01在对照组各组间阳性细胞的表达数目随时间变化明显下降。

These antennas can cover GSM900/DCS/PCS/UMTS operation. In the chapter 2, the antenna is designed based on the concept of monopole antenna. Furthermore, the antenna structure have two radiant paths and coupled each other at tail end to do impedance matching. In addition, to raise distance between radiation plane and ground will avoid capacitative effect effectually. In the chapter 3, the antenna is designed based on the concept of planar inverted-F antenna. Furthermore, that the antenna structure have two radiant paths and coupled each other at tail end to do impedance matching is similar to chapter 2. But there is a difference in them. We can choose the short position to change input impedance at this structure. In the chapter 4, the antenna is designed based on the concept of planar inverted-F antenna which takes coupled-fed. It will produce the first mode and high-order mode near the frequency, 900MHz. The feature of this type is to reduce the volume effectually. This antenna can not only cover GSM900/DCS/PCS/UMTS operation but maintain good radiation efficiency. Finally, we will compare three antennas, and develop procedure with industrial view, and propose the prospect of the GSM/GPRS antenna in PND, as a conclusion.

在第二章中，我们使用单极天线设计概念，使用双路径架构并於末端耦合来对天线阻抗做匹配，产生涵盖GSM900/DCS/PCS/UMTS四频操作频带，并提高与接地面的辐射高度，以避免电容效应，使天线具有良好的辐射特性；在第三章中，使用倒F形天线设计概念，使用双路径架构於末端耦合，并於辐射臂上采取适当接地点电感效应作输入阻抗匹配，达成涵盖GSM900/DCS/PCS/UMTS系统的四个操作频带；在第四章中，采用倒F形架构并使用耦合馈入方式，使得长辐射金属臂在低频900 MHz附近产生共振，产生低频基频模态及高阶模态，以达成宽频及频宽涵盖GSM900/DCS/PCS/UMTS频带操作，并有效缩减使用体积；最后，分别比较此三种架构的优缺点，再加以业界角度来思考，研发产品天线的流程及思考方向，以及天线应用於可携式导航装置中未来的展望作为本论文的总结。

The capital parameters of the optical system are f′=1 600mm,2ω=18°×0.148°, F/number=F/10,and all surfaces are conicoid.

光学系统的基本参数为：焦距f′=1 600 mm，视场角为2 w=18°×0.148°，相对孔径为1／10，3个反射面均为二次曲面。

Non-fluoride ionic number of Nd-F in dilute LiF-NdF3 melts and Nd-O-F species in dilute LiF-NdF3-Li2CO3 melts was researched by cryoscopic method,respectively.

采用冰点降低法分别研究了以LiF为溶剂的稀LiF-NdF3熔盐中Nd-F离子团及LiF-NdF3-Li2CO3熔盐中Nd-O-F离子团的非氟离子的个数。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。