pop (safety) valve  急泄安全阀

pop safety valve  紧急安全阀; 急泄安全阀; 应急安全阀

pop-off valve  安全阀; 爆脱阀

spring-loader [pop] safety valve  弹簧安全阀

gas valve valve seat  气门-门座

valve-valve base  气门-气门座

Valve-valve seat  气门-气门座

computer screen pop-up progran pop smear screening  电脑提示系统; 子宫颈抹片检查筛检率

auxiliary valve relief valve setting  辅助阀安全阀调定

bell- shaped valve cup valve  钟形阀; 杯形阀

blade control valve relief valve  铲刀控制阀安全阀

brake valve relief valve  制动阀安全阀

butterfly valve + non-return intake valve  蝶阀+止回阀式进气阀

clack valve clap valve  蝶形阀

cooling valve charge relief valve pressure test  冷却阀加注安全阀压力试验

cup valve bell shaped valve  杯形阀; 钟形阀

cup valve(bell-shaped valve)  钟形阀; 杯形阀

dead-weight safety valve (weighted valve)  重码安全阀

drum selector valve protection relief valve pressure test  卷筒选择器阀防护安全阀压力试验