So it is necessary to analyze the mechanics behaviour of the locomotive wheel added the retaining ring, so that we can supply the theory proof to the safety usage of the locomotive.
因此，必须对加装扣环后机车轮对的力学行为进行研究，为保证铁路机车运行安全提供理论依据。
The ring beam supporting and protecting structure of deep foundation ditch has such merits as safety, saving and being able to provide enough construction space.
深基坑环梁护壁支撑结构具有安全、经济和能提供宽阔的施工空间等特点。
They were dressed in climbing suits and the ring was attached to a safety rope.
他们穿着攀登服，带着连接到安全绳子的圆环。
The tapered windscreen flow field of the fan is composed of the outer ring turbulent jet and the inner sink, which tightly closes gas and dust to ensure the safety production.
风扇环形外腔产生的正压湍流射流在内腔负压汇流作用下形成锥形风幕流场，将处于流场范围内的气体及粉尘严密封闭起来，使安全生产得到保障。
The plane rotation axis system adopted for the bridge is composed of plane rotation axis, inner and outer safety legs and plane ring slideway.
大桥采用的平面转动轴心体系由平面转动轴心、内外保险腿和平面环形滑道组成。
Using valtrac ring to anastomose alimentary were norm safety and simple, which were superior to substitute Stapler and suture.
应用吻合环进行消化管吻合操作规范、安全、简便，以期提供能够一种替代手法缝合和器械吻合的一种选择。
An artistic automobile safety belt consists of a safety belt, a buckle, an adhesion point, and a fixing ring.
艺术式汽车安全带，由安全带、扣卡、粘贴点和固定环组成。
The device has the advantages of simple structure, convenient use and safety, and really removing the worries of being unable to taking off the finger ring.
本实用新型结构简 单，使用方便、安全，确实可以消除戒指戴上后无法摘下的烦恼。
The invention discloses a safety-type toy boomerang, including a leaf blade, whose outer margin is provided with a ring-shape guard ring.
本发明公开了一种属于玩具的安全型飞去来去，包括叶片，叶片的外缘具有环形的护圈。
The invention discloses a safety-type toy boomerang, including a leaf blade, whose outer margin is provided with a ring-shape guard ring.
本发明公开了一种属于玩具的安全型飞去来去，包括叶片，叶片的外缘具有环形的护圈。
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