您要查找的是不是：
- That oyster closed up its valves. 那個(gè)牡蠣把殼合攏起來(lái)。
- Having a shell consisting of two hinged valves. 雙瓣殼的有由兩個(gè)開(kāi)合的瓣組成貝殼的
- Cars began using caps that incorporated two valves. 汽車(chē)開(kāi)始使用裝有兩個(gè)閥門(mén)的油箱蓋。
- Fill kill and choke valves with seawater. 將壓井閥和阻流閥注滿(mǎn)海水。
- A rod moved by a cam to operate the valves in an internal-combustion engine. 閥門(mén)挺桿通過(guò)凸輪轉動(dòng)的桿，用來(lái)操縱內燃機的閥門(mén)
- Streams are switched by solenoid valves. 流路靠電磁閥進(jìn)行切換。
- The valves of the heart allow the blood to pass in one direction only. 心臟的瓣膜使血液只能朝一個(gè)方向流動(dòng)。
- All needle valves must be closed on test kit. 檢測組件上的所有針形閥必須關(guān)閉。
- No downstream shutoff valves are allowed. 不允許有下游關(guān)閉閥。
- Yes,but it's quite a job to treat these valves. 是的，但是處理這些閥門(mén)相當費事。
- Opening by valves,as the capsule of a lily or iris. 瓣裂的由莢分開(kāi)的，例如百合花或蝴蝶花的莢膜
- The subscipt i refers to instantaneous valves. 腳注i指瞬時(shí)值。
- Velan Small Forged Steel Check Valves. 鍛造低溫閘閥、截止閥和止回閥。
- FLIGHT CONTROLS HYDRAULIC SHUTOFF VALVES. 飛行操縱液壓關(guān)斷活門(mén)。
- FORGED STEEL PISTON CHECK VALVES. 鍛鋼活塞止回閥用于水平和垂直管道。
- Globe Stop Check Valves Major Features. 球形截止止回閥主要特點(diǎn)。
- Globe Stop Check Valves Product Line. 球形截止止回閥產(chǎn)品系列。
- Do Check Valves Operate Properly? 止回閥是否工作正常?
- Pressure Seal Swing and Tilting Disc Check Valves. 節能梭式止回閥。
- SAFETY VALVES FOR HEATING INSTALLATIONS. 取暖設備用安全閥。
