direct current blocking

coupling straigth-way cock

两端带阴螺纹管接的直通旋塞

multicellular straight through cyclone

多室直通式旋风分离器

General purpose industrial valves-Iron plug valves

GB/T12240-1989通用阀门铁制旋塞阀

water ga(u)ge cock

水量表旋塞，示水位旋塞

3-Way Plug Valve 1;3-Way Plug Valve 2;3-Way Plug Valve 3

向旋塞阀 1;3 向旋塞阀 2;3 向旋塞阀 3

fixed impeller straight through cyclone

固定叶轮直通式旋风分离器

The clogged scupper pipe(dia.40㎜)in officer's bath rooin to be freed up.

大副浴室堵塞的排水管（直径40㎜）清通。

cock,for fitting into bung holes of casks or barrels

塞入桶或圆筒口的旋塞

air shut-off cock

(制动机)截断旋塞

A DIA PISTON DIAMETER

A DIA 活塞直径

Research on Tilt Rotor Vertical Take-Off and Landing Roll Channel Control Problem;

倾转旋翼机垂直起降滚动通道控制问题研究

Design of Bessel Low Pass Filter in Direct Digital Synthesizer

直接数字合成器中贝塞尔低通滤波器设计

Open upstream slowly, fill the valve and bleed the air through Test cock 2, 3 and 4.

慢慢开启上游，注满阀门，通过测试旋塞2，3和4号排放空气。

CT measured parameters of upper airway in OSAHS patients

阻塞性睡眠呼吸暂停低通气综合征上气道螺旋CT测量指标比较

CT measurement of upper airway on obstructive sleep apnea syndrome

阻塞性睡眠呼吸暂停低通气综合征上气道螺旋CT测量

piston diameter at ring lands

活塞环处的活塞直径

triple front round

直体全旋转体540°

liquid piston rotary compressor

液体活塞式旋转压气机