采用全径开口设计，这样，材料不会堆积或粘连在阀体上。
The Lunar Ball Segment valve has a full-bore opening where material cannot build up, accumulate, or be captured within the valve body.
VRT成像能清晰显示螺钉轨道全径、螺钉位置及固定角度，并优于X 线片及MPR成像。
VRT could clearly display full aperture of screw orbit, location of screw and angle of fixation and hence was superior to X-ray plain film and MPR.
在需要关注压降的地方，应采用不缩径全流道球阀或类似结构的阀门。
Where pressure drop is a concern, full-port ball valves or like construction are to be used.
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