the discrete equations of plane problem in elasticity are acquired by weak variation form.

several instruction forms may be incorporated into one variation form.

这几份指示格式可编入同一份变更表中。

this article discusses the necessity of air leakage detection to check the vacuum of the vacuum contactor in operation, and the mechanism of air leakage detection theoretically.

论述了真空接触器真空度运行检漏的必要性，并从理论上探讨漏气检测的机理。

you should learn about different kinds of air conditioners and check out air conditioner reviews and buying guides.

你应该了解不同类型的空调，并查看空调的评论和购买指南。

air flux check system with temperature and pressure compensation

气体流量检测系统的温压补偿

the air check shuts off before all the brine solution has been drawn out.

空气逆止阀就会在所有的盐水被吸完之前关闭。

the effect of acp on the energy and combustion performance of smokeless modified double-base propellant

ACP对无烟改性双基推进剂能量和燃烧性能的影响

the characterization of aging property of modified double-base propellant gs-1 by dynamic mechanical analyzer

GS-1改性双基推进剂老化的动态力学表征

properties of smokeless cross-linked modified double base propellant

无烟交联改性双基推进剂综合性能研究

a non-lead catalyzed nitramine modified double base propellant with low burning rate and low flame temperature

一种非铅催化硝胺改性双基低燃速低燃温推进剂

study on the mechanical properties of cross-linked composite modified double-base propellant with low signal

壳体粘结型低特征信号固体推进剂力学性能研究

increasing the burning rate of nitramine modified double-base propellant with acp

用ACP提高硝胺改性双基推进剂的燃速

the experimental study on deflagration-to-detonation transition in modified double-base propellant with acp

含ACP改性双基推进剂的燃烧转爆轰实验研究

influences of lead salts on combustion characteristics of high energy smokeless modified double-base propellant

铅盐对高能无烟改性双基推进剂燃烧性能的影响

studies on foundational formulation of composite modified double base propellant containing rdx and its burning rate

含RDX改性双基推进剂基础配方及其燃速探索

application of thermoplastic polyurethane elastomer in modified double base propellant

热塑性聚氨酯弹性体在改性双基推进剂中的应用

the chemical stability and store age of the new modified double-base propellant

新型改性双基推进剂化学安定性与贮存寿命

the general rules of acp increasing the burning rate of nitramine modified double-base propellant

ACP提高硝胺改性双基推进剂燃速的规律研究

great chunks of the ice crust, which has covered the mountains through the winter, break off and drop heavily into the thawing sea beneath.

冬日里覆盖着山脉的大块冰壳开始破裂开来，重重地跌落到山脚下正在融化的海水里。

the superficial structures of the neck, the lateral region of the neck, the sternocleidomastoid region

颈部浅层，颈外侧区，胸锁乳突肌区

he watched an owl flutter toward the school across the bright blue sky, a note clamped in its mouth.

他望着一只猫头鹰扑扇着翅膀掠过蔚蓝色的天空，往学校的方向飞去，嘴里叼着一张纸条。