Although a planar pair might theoretically be included, this would impose no constraint and thus be equivalent to an opening in the kinematic chain.

尽管理论上还可以包括平面，但平面却不能加以约束，因此只相当于开式运动链。

youdao

Kodak company describes open chain reactive methylene two - equivalent yellow - forming conplers.

柯达叙述了一种直链的活性亚甲基两当量的黄成色剂。

youdao

Kodak company describes open chain reactive methylene two-equivalent yellow-forming conplers.

柯达叙述了一种直链的活性亚甲基两当量的黄成色剂。

youdao

So if Apple sells 13M TVs, that means they will have purchased from their supply chain the equivalent display surface area of over 11 times the number of iPhones they will have shipped in 2012, or almost 4 times the number of iPads they will have shipped in 2012!!

FORBES: Another Key Reason for Apple to Get Into the TV Business