例句 /

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.

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.

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。