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

1、

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。

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2、

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。

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3、

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。

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4、

air flux check system with temperature and pressure compensation

气体流量检测系统的温压补偿

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5、

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。

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6、

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

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7、

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

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8、

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

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9、

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

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10、

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

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11、

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

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12、

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

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13、

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

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14、

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

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15、

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

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16、

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

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17、

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

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18、

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。

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19、

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

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20、

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。

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