valve n. 1.【机械工程】阀,活门,舌门;汽门。 2.【解剖学;动物学】瓣,瓣膜;(贝)壳瓣;【植物;植物学】荚片;(藻的)瓣;(果实的)裂片。 3.【建筑】门的一扇。 4.〔英国〕【无线电】电子管,真空管。 a change valve 三通阀。 an exhaust valve排气阀。 a pulmonary valve【解剖学】肺动脉瓣。 a safety valve安全阀,保险阀。 adj. -d 有阀[瓣等]的。 adj. -less 无阀[瓣等]的。 n. -let 小阀[瓣等]。
Life is the main factor restricting air valve and spring - loaded valves quality , the general long - term continuous operation of the compressors to life 80 hours ; for mobile , short - term or intermittent operation of compressors , may require slightly more 限制气阀寿命的主要因素是阀片及弹簧质量,一般对长期连续运转的压缩机,希望寿命达8000小时以上;对移动式、短期或间歇运转的压缩机,要求可稍低些。
Servo loading valve is the pivotal part of the system , it is designed again in this thesis , the mathematical model of the system and its control parts was established and built . the author deduced how the system parameters and control method influence the system dynamic state through theoretical analysis of the system . in addition , the dissertation introduces how to carry out protection in event of sudden break down of the system 伺服加载阀为整个系统的关键元件,论文进行了加载阀的设计,其性能指标达到了理想要求,并完成了对系统关键元件及整个加载系统进行了建模与仿真,通过理论分析导出了系统结构参数和控制方法对系统动态性能及加载精度的影响,并进行了系统误差分析。