以下为句子列表：
英文: 11 Never vent hydrogen from a high pressure source such as a cylinder in order to remove contaminants. Always use an external source of nitrogen or air for this purpose.
中文: 决不允许为了吹除杂质从高压气源，例如气瓶中放出氢气。做类似事情时，只能用氮气或空气作为外在气源。
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英文: A new technique has been developed to numerically calculate various quantities of interest, including leakage rate, leakage quantity, and leakage time dependence, for a high pressure system secured by more than one seals.
中文: 摘要以串联双密封结构为研究对象，建立了串联密封结构系统的数学模型，通过理论分析和数值计算，揭示了串联密封结构系统正压泄漏的漏率、漏量与泄漏时间关系的规律及其影响因素。
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英文: A process by which the hydrocarbon molecules of petroleum are broken into simpler molecules, as of gasoline or kerosene, by the addition of hydrogen under high pressure and in the presence of a catalyst.
中文: 氢化裂解将石油的含氢分子分裂成更简单的分子（象汽油和煤油的分子）的过程，此分裂过程是在加催化剂及高压氢气的条件上进行的
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英文: A ridge of high pressure is approaching from the Atlantic and will bring sunny wheather.
中文: 来自大西洋的高压脊正在逼近，将会带来阳光充足的天气。
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英文: Able to work under high pressure ＆ time limitation.
中文: 能够在高压力下和时间限制下进行工作。
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