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The dynamic response of the rarefaction wave launch system is studied by rigid-flexible coupling subsystem method.

摘 要：采用刚柔耦合子系统法对膨胀波发射系统动力学响应进行计算分析。

Launch of Serpina, the world's first anti- hypertensive drug, derived from Rauwolfia serpentina .

首次用蛇根木研制成功了世界第一个抗高血压的药。

He says most of the risk of space flight occurs at launch and re-entry, no matter what the target.

他说，大多数宇宙飞船的危险性发生再发射以及返回的时候，与发射目标无关。

I have destroyed thoroughly oneself, I can tell you only then: I already did not have the rear guard to be possible to draw back, also did not want again to draw back, I could let loose all to launch an attack end a type.

我把自己彻底毁了，我能告诉你的只有：我已经无后路可退，也不想再退，我会放开一切出击终结一式。

The launch of the Nano serves to remind rich-world bosses that they still need to keep an eye on their rear-view mirrors.

Nano的发布是一个信号，提醒着发达国家跨国企业的老板们仍需留意自己的身后。

Before we launch into it, let's just recap from the previous developer diary.

在我们开始之前，让我们概括一下之前的日志。

China continue to offer some help for some countries, in the meantime, China will launch some economic cooperations with mutual benefit and reciprocality by forms of joint venture management,technological service and compasention trade.

在继续向一些国家提供援助的同时，中国通过合资经营、技术服务及补偿贸易等形式开展互惠互利的经济合作，取长补短，互通有无。

The conventional numerical simulation of a reverberant field as a launch acoustic environment was introduced. Following the reciprocity theorem used in the coupled FE-BE model, the structural response due to reverberant acoustic excitation was substituted by the sound pressure caused by force excitation on the structure, then the output response power spectrum density of the coupled model subjected to reverberant environment was evaluated based on the stochastic analysis principle.

首先介绍了传统的构建混响声场的数值模拟方法；其后利用声振耦合中的互易定理，将混响声场的激励问题转化为结构模型上力激励引起的场点声压响应问题，并采用随机分析原理，用谱分析方法推导了结构在混响声场激励下的响应计算公式；最后建立了航天器典型结构的声振耦合模型，并分别用传统方法和利用互易定理的方法进行了数值模拟。

The dynamic behaviors of the artillery recoiling parts have an important effect on the measurement accuracy of the artillery launch test and the evaluation of the artillery performance.

火炮后坐力试验台架的动态特性，直接影响火炮发射试验时的测试准确度，并会对火炮性能的准确评价产生影响。

Policing the use of drugs in these conditions had become a frustrating "merry-go-round" of conviction, release and reconviction, according to Detective Chief Inspector Paul Furnell, who has helped to launch a novel approach to drugs singled out for praise by the UK Drug Policy Commission, a think-tank.

据曾帮助试行过一种由英国的毒品政策委员会挑选出的对付毒品新方法的侦缉总督察Paul Furnell称，治理这样的毒品使用问题成了令人困惑的一连串的：定罪、释放、再定罪。

We have something to do in the new stage.

在这段崭新的时期中，我们有一些要做的。

The difference between tourism decision-making under uncertainty and risky tourism decision-making is indistinctive.

其中不确定性旅游决策和风险旅游决策的界线比较模糊，两者的区分是相对的。