A test and pressure relief valve should be installed to assure relief of internal pressure prior to servicing and as a visual indication of trap operation.
应该安装一个测试和压力安全阀，确保内部压力能够在维修前得到释放，并作为疏水阀工作的直观显示。
Under UNIX, calling the kernel consists of an operation known as a syscall or trap.
UNIX下的内核调用由所谓的syscall或者trap操作构成。
There is also interest in research co-operation, especially on carbon capture technologies, which hopes to trap greenhouse gases from power plants and bury them.
他们也有兴趣进行研究方面的合作，尤其是有希望捕捉发电厂的温室气体并将其掩埋的碳捕捉技术的研究合作。
The development, installation, and operation of the pig trap for small diameter pipeline is introduction.
介绍了小口径管道清管器收发球装置的研制、安装及其工作原理。
The development, installation, and operation of the pig trap for small diameter pipeline is introduction.
介绍了小口径管道清管器收发球装置的研制、安装及其工作原理。
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