no box type valve body 无填料函式阀体
NO Valve 常开阀
No-return valve 单向阀 ; 止回阀
Control Valve Serial NO 控制阀编号
no-valve 无阀
no-valve control 无阀控制
no valve compressor 无阀压缩机
No-oil valve 禁油阀门
no-load valve 零载阀门
·2,447,543篇论文数据，部分数据来源于NoteExpress
Purpose: To test valve No. 1 for tightness against reverse flow.
目的：检测1号止回阀对于回流的密封性。
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Close shutoff valve No. 2 then shut off valve No. 1 on test assembly.
关闭2号关闭阀，然后关闭测试总成上的1号阀门。
Purpose: To test check valve No. 2 for tightness against reverse flow.
目的：检测止回阀2号对于回流的密封性。
Valve has released no more details about the mystery project.
BBC: Game maker Valve Software recruits hardware experts
That remains to be seen, of course, as Valve's made no official announcement regarding that project's availability.
ENGADGET
Despite the grapefruit-sized device being on show on both Valve and Xi3's stands at CES no details of its internals have been given.
BBC: Steam 'game console' hardware debuted at CES
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