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There are 9 essential amino acids that are obtained only from food, and not made in the body.

有9种必需氨基酸，是唯一获得来自食物，而不是在身体。

The network-torpedo can realize real time identification, pursuit and attack on target with the information obtained effectively from battlefield at any time. We put emphasis on the functions and principles of several key technologies, including acoustic communication system, satellite navigation location system and power system. Finally, we propose some applied ideas for the network-torpedo.

展示了网络鱼雷以其能随时高效获取战场环境信息来实现对目标的实时识别、跟踪和攻击，并着重从功能及原理上对水声通信系统、卫星导航定位系统及动力系统这几项关键技术进行了较详细的论述，最后提出了网络鱼雷的作战应用设想，展望了其应用前景。

Based on the acoustic radiation modes, the simulation of the reconstruction of acoustic pressure fields is studied. And a satisfactory result is obtained.

基于声辐射模态，对辐射声场的重构进行仿真研究，取得了令人满意的结果。

An analytic expression for the acoustic pressure in farfield are then obtained.

考虑弹性结构、可压缩流体和粘弹性消声瓦在交界面上的相互作用，然后给出了远场声压的解析表达式。

A result of the microscopic structure's research analysis to the slide zone soil has confirmed the acquaintanceship obtained.

对滑带土微观结构的研究分析，验证了所得滑带土强度规律性的认识。

The optimized structures and energies of the reactants, intermediates, transition states and products of two reaction channels (corresponding to syn-acraldehyde and anti-acraldehyde) in gas or in methanol solvent were obtained. The potential energy profiles reveal the processes of the trimethylamine-catalyzed Baylis-Hillman reaction between acraldehyde and formaldehyde in gas or in methanol solvent at the microscope level.

通过研究，获得了三种情况下两种反应通道(分别对应于顺式-和反式-丙烯醛)中涉及的反应物、产物、中间体、过渡态的优化结构及其能量，并由此得到了反应的势能面图，在电子微观层次上揭示了三甲胺催化的丙烯醛和甲醛的Baylis-Hillman反应的微观过程。

An antibiotic obtained from an actinomycete and used as an intestinal antiseptic in surgery.

从放射菌类提取的用来在外科中治疗肠道防腐的药剂。

An antibiotic obtained from an actinomycete and used to treat infections by gram-positive bacteria.

从放射菌类提取的用来治疗由阳性鹰嘴豆细菌带来的传染病。

Griseoviridin was firstly separated from marine actinomycete,and its complete information of NMR spectra were obtained and analyzed in the paper.

分析并获得了灰绿霉素较完整的核磁共振谱信息，并首次从海洋放线菌中分离得到灰绿霉素。

An antibiotic obtained from the actinomycete Streptomyces erythreus; effective against many Gram-positive bacteria and some Gram-negative.

从放射链霉菌中得到的抗生素；有效的抵抗革兰阳性细菌和一些革兰阴性细菌的药物。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。