I did not measure that flex joint those spiral collars.
我没量那个柔性短节和螺旋钻链。
The logging string was decoupled from the tractor section using a flex joint to enable consistent tool positioning and centralization in the well.
使用一个柔性接头将测井管串与爬行器段隔开，以实现连续工具串在井内的定位和居中。
Although effort is required to bend a joint or flex a muscle, the body is able to recycle much of the energy expended through spring-like tendons and elegantly arranged muscles.
尽管需要花力气去弯曲关节或拉伸肌肉，但人体可以利用弹簧般的肌腱和分布优雅的肌肉来回收相当部分的能量。
The elderly are tend to flex hip joint more and use hip extensor muscle to propel the body forward.
老年人在上坡时倾向以弯曲髋关节，多用髋伸直肌群的策略使重心向前，身体推进。
Patella instability is a kind of common patellofemora disease, it refers to the degree of patella extraversion or moving outward increases when the knee-joint extend and flex.
髌骨不稳是一种常见的髌股关节疾患，指膝关节伸曲活动时髌骨发生外倾或外移程度加大。
Patella instability is a kind of common patellofemora disease, it refers to the degree of patella extraversion or moving outward increases when the knee-joint extend and flex.
髌骨不稳是一种常见的髌股关节疾患，指膝关节伸曲活动时髌骨发生外倾或外移程度加大。
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