variable diameter ram [油气] 变径闸板
variable diameter paraffin scraper 变径刮蜡器
PDC variable diameter drilling bit PDC变径钻头
Variable-Diameter Tilt Rotor 可变直径倾转翼方案
variable-diameter pile 挤扩支盘桩
A positive displacement variable diameter stabilizer was developed in China, and its field tests and real drilling applications in Well QHD32 6 A26 was presented.
并介绍了国内自行研制的正排量变径稳定器在QHD 32 - 6 - A 2 6井的现场试验和实钻应用情况。
The analysis showed that the diameter variable wheel could let the moon detection vehicle be able to possess much better passing capability.
分析表明，可变直径车轮使月球探测车具有更好的通过性能。
Structure parameters of its variable intake system, such as diameter and length of intake manifold, switching speed of control valve switch, etc. , are optimized.
对该汽油机采用的可变进气系统的歧管直径和长度、控制阀开关的切换转速等结构参数进行了优化设计。
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