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1·The utility model relates to an energy conservation rupture disk nitrogen machine.

本实用新型涉及一种节能安全膜制氮机。

2·What should be pay attention to in selecting the rupture disk is its material, explosive pressure and applied location.

对爆破片的选用应注意其材质、爆破压力、型式、位置的选择。

3·A new technique is described for safety-valve on-line testing in which out-source gas is introduced into the cavity enclosed by the valve plug and rupture disk.

介绍了一种利用外接气源，向安全阀瓣与爆破片形成的隔离腔内直接充压，对安全阀进行在线检测的方法。

4·What does it mean for a disk to rupture, and how does it happen?

椎间盘突出会发生什么后果？它是怎样发生的？