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。

youdao

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。

youdao

In application system, Using trap technology to deal with suddenly event can improve dependability, flexibility, operation convenience of application system.

在应用系统中使用陷阱技术，处理突发事件，可提高应用系统的可靠性、灵活性和操作方便性。

youdao

Tayside Police have promised that its officers will be working in co-operation with forces north and south of the border to trap the egg collectors believed to be responsible.

BBC: Thieves raid osprey nests