- 相关词组
- mitral valve prolapse二尖瓣脱垂;
- pass valve直通阀
- valve seat阀（门）座;
- protective valve保护阀
- exhaust bypass valve control wire switch排气旁通阀控制线转环
- BUTTERFLY VALVE蝶形阀;蝶阀;
- double check valve双止回阀,双单向阀
- valve refacer阀面磨光机;
- dividing valve分流阀
- bicuspid valve二尖瓣；二尖瓣，僧帽瓣
- on-column detector柱上检测器
- ball valve球阀，弹子阀;
- liquid valve液体阀
- lineman's detector携带式检电器
- regulating valve控制阀，调节阀;
- detachable type fire detector可拆式火灾探测器
- automatic control valve自动控制阀;
- diversion valve引水阀;转向阀
- adjusting valve调节阀
- check valven.止回阀;
- 今日热词
- 热门搜索
- cup n.杯子;一杯（的量）;（胸罩的）罩杯;优胜杯;vt.使（手）窝成杯状;使（双手）成圆状托起;为…拔火罐;
- aloe vera 真芦荟，羊角掌，真芦荟制品;芦荟汁(用于生产护肤霜等);
- Africa n.非洲;adj.非洲的;
- six n.六;六个;六岁;六点;num.六;六个;
- smell v.有(或发出)…气味;闻到;嗅到(气味);嗅(气味);有难闻的气味;觉察出n.气味;嗅觉;臭味;嗅
- background n.出身，背景;底色;幕后;背景音;
- European adj.欧洲的，欧洲人的;欧盟的;n.欧洲人;
- did not 没有;未;未尝;未曾;
- Failure n. 失败，不及格;缺乏，不足;破产，倒闭;失败的事，失败者;
- scholarship n.奖学金;学术（研究）;
- statistics n.统计数字;统计学;统计数字（statistic的复数）;
- worthless adj.无价值的;
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