分子云是一个包含冷却星际气体和尘埃的区域，这些气体和尘埃是星系形成之后的残留物，主要由氢分子组成。
A molecular cloud is a region containing cool interstellar gas and dust left over from the formation of the galaxy and mostly contains molecular hydrogen.
采用程序升温气相色谱法和氢火焰离子化检测器，对土壤中15种农药的残留量进行检测，该法简便、快速。
The amounts of 15 kinds of pesticide residues in soil were determined by gas chromatography of programing temperature with FID detector. The method is simple and rapid.
研究了预塑变对爆轰处理和未爆轰处理样品的强度、表面残留应力、氢脆敏感性及其关系的影响。
Investigation was made of effect of preplastic deformation for unexplosive and explosive treatments on strength, surface residual stress and hydrogen embrittlement of the specimens.
建立了采用直接进样毛细管气相色谱法测定氢氯噻嗪中甲醛残留量的方法。
A capillary gas chromatographic method with directly sampling was established to determine the residual amount of formaldehyde in hydrochlorothiazide.
金星快车已经发现了逃逸到太空的氧，氢和氦离子，他们是早期海洋的残留物。
Venus Express has detected oxygen, hydrogen and helium ions-remnants of early oceans-escaping into space.
如果氢元素残留在部件中达到一定的时间，微结构损伤就会使钢材的机械性能严重衰减。
When hydrogen remains in a component for an extended time, the microstructural damage that develops significantly degrades the mechanical properties of the steel.
建立了毛细管气相色谱法测定甲磺酸齐拉西酮中残留溶剂乙醇、异丙醇、二氯甲烷、正己烷、四氢呋喃、D MF、丙二酸二甲酯的残留量。
A capillary GC method with FID detector for the determination of residual organic solvents ethanol, isopropanol, dichloromethane, n-hexane, tetrahydrofuran, DMF and dimethyl malonate was established.
目的：建立一种气相色谱法测定原料药头孢唑肟钠中二氯甲烷和四氢呋喃有机溶剂残留量的方法。
Objective: We detected the content of methylene chloride and diethylene oxide in Ceftizoxime Sodium using head-space GC method.
同时本文对黄芩苷磷脂复合物溶剂残留量及鼻黏膜刺激性进行了考察，结果表明，无四氢呋喃有机溶剂残留，且药物没明显的刺激性。
At the same time , we did the study of organic solvent residue and irritation to nasal mucosa. The results illustrate that the complex has no residue of tetrahydrofuran and no obvious irritation.
同时本文对黄芩苷磷脂复合物溶剂残留量及鼻黏膜刺激性进行了考察，结果表明，无四氢呋喃有机溶剂残留，且药物没明显的刺激性。
At the same time , we did the study of organic solvent residue and irritation to nasal mucosa. The results illustrate that the complex has no residue of tetrahydrofuran and no obvious irritation.
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