可发射的

It is shown in this research that:① The acoustic emission phenomena of rock discontinuously occur under the effect of temperature.

试验研究表明：①随着温度升高，岩石的声发射现象是间断发生的；②花岗岩存在一个开始发生热破裂的门槛值温度，其值为120 ℃左右；③试验温度范围内花岗岩热破裂的声发射现象可分为5个阶段，即岩石原生裂隙整合阶段、热破裂前声发射静默阶段、热破裂声发射阶段、大规模热破裂后声发射静默阶段、二次热破裂开始阶段。

Under the high frequency vibrating action, the crystal grain formed on the surface of the crystal nucleus eradiation equipment would be broken and peeled off, thereby ejected to zinc molten pool continuously and served as crystal nucleus source of equiaxed grain during solidification.

结果表明，当一种带有冷却结构且进行高频振动的晶核发射器插入锌液内时，锌液在晶核发射器表面迅速形核且长大，在高频振动作用下表面形成的晶粒将被折断剥离，从而连续不断地弹射到锌液中，成为凝固过程中形成大量等轴晶的晶核来源；采用带有水冷和气冷结构的晶核发射器对锌液进行振动激发形核处理后，锌凝固组织中的等轴晶率可分别提高到65%和80%。

The infrared emission phototube is setted on the adjustable bracket front-end of the cover, so we can adjust the infrared emission phototube to aim at the infrared receiving phototube expediently.

红外发射管安装在发射器金属罩前端的可调支架上，可方便地将红外发射管对准接收器上的红外接收管。

Mechanical properties and combusition characteristics were affected evidently by the solid grain configuration and its character. Mechanical propertiesof the material system could be improved by adopting RDX and proper granularpropellants granularity rank-match. It is favorable to obtain progressivity burning effect byaffiliating increasing burning surface propellant grains. Affiliating fast burning componentthese burning rate regulator in the bond system can quicken burning rate of propellants andimprove burning progressivity.

固体颗粒形态及其性质对力学性能和燃烧性能具有较大的影响，采用RDX与适当颗粒度的固体发射药的粒度级配有利于改善力学性能，加入增面燃烧的发射药颗粒，有利于获得渐增性的燃烧效果，在粘合剂体系中加入速燃组份等燃速调节剂，可加快发射药的燃气生成速率，改善燃烧的渐增性。

During operation in the space station, astronauts replace equipment and materials can be added or manned spacecraft from the spaceshuttle transport, supplies of equipment can also be the delivery of unmanned spacecraft.The former Soviet Union in 1971 launched the world's first space station ---"salute" on the 1st, then again in 1983 to launch a "salute" No. 2-7. The former Soviet Union in 1986 launched the space station more "Peace".

在太空站运行期间，宇航员的替换和物资设备的补充可以由载人飞船或航天飞机运送，物资设备也可由无人航天器运送。1971年前苏联发射了世界上第一个太空站———"礼炮"1号，此后到1983年又发射了"礼炮"2—7号。1986年前苏联又发射了更大的太空站"和平"号。

The results show that the value of burning rate pressure exponent of propellant and its change law can bring about a great change of interior ballistic behavior, The new type high-energy propellant whose burning rate pressure exponent is decrescent as pressure increasing can obtain higher interior ballistic piezometric efficiency, and reduce the sensitivity of bore pressure and muzzle velocity on loaded conditions of propellant.

结果表明，发射药燃速压力指数的大小及其随压力的变化规律对内弹道性能有很大的影响，对于燃速压力指数随压力升高而减小的新型高能发射药，可获得较高的内弹道示压效率，降低膛压和弹丸初速对发射药装填条件的敏感性。

By the test of the burning characteristic of nitramine propellant, it was found that sent the pressure and burning rate curve varied almost linearly.

通过对硝胺发射药燃烧特性的测试，发现硝胺发射药的燃速压力曲线几乎是一条直线；由落锤冲击实验，认为硝胺发射药的低温力学性能还需进一步改善；根据弹道试验所得到的低温感硝胺发射药的初速和膛压结果，以及对试验火炮的烧蚀结果，证明了低温感硝胺发射药可作为中大口径火炮装药的可行性

The scandium oxide doped in the barium-calcium-aluminate 5BaO·3CaO·2Al2O3·0.6Sc2O3 compound is supposed to be a carrier for aarium oxide or barium atom which is the electron source, and it plays the role in controlling and roplonishing the electron source.

在掺氧化钪的发射物质5BaO·3CaO·2Al2O3·0.6Sc2O3中，氧化钪的作用则在于它和铝酸盐中的可利用氧化钡结合为2BaO·Sc2O3，成为电子发射源氧化钡或钡原子的载体，它起控制和补充发射源的作用。

A counterstrike mission. MIRVing these weapons would increase the effectiveness of each launcher, and when combined with the PLAN's evolving SSBN fleet would allow a smaller number of launch platforms to serve as a counterforce option and credible deterrent to any nuclear strike, should a "launch on warning" posture be adopted with sufficient support assets.

这些个导弹的分导式多弹头改装将增强每一部发射车的作战效能，联合神州海军成长中的弹道导弹核潜艇，就可使成为事实在少量发射平台的情况下执行还击使命，并且在有足够资源共同的情况下摆出一个&发射正告&的仪态，靠得住地威慑任何核攻击行为。

The results show that the rudder angle of torpedo, the battery activation time, and the initial velocity of torpedo all affect the trajectory of torpedo. The rudder angle ought to be set positive when torpedo is launched downwards,or set negative when torpedo is launched upwards to gain perfect trajectory. Meanwhile, shorter battery activation time and higher initial velocity of torpedo are necessary.

结果表明，以上3个参数对鱼雷弹道都有影响，由小深度向大深度发射鱼雷时，横舵管制舵角应设为正值，由大深度向小深度发射鱼雷时，横舵管制舵角应设为负值，并尽量缩短动力电池激活时间，提高鱼雷出管速度，电动力鱼雷管外激活发射可获得较好的弹道。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐