英语翻译a flat - faced follower cannot contact a concave cam sur
英语翻译
a flat - faced follower cannot contact a concave cam surface in a single point .therefore ,such concavities are not acceptable in cams for us with flat- faced followers.the translational momentum of a body is given by the product mv i.e.,by its mass m times it velocity vector v .
a flat - faced follower cannot contact a concave cam surface in a single point .therefore ,such concavities are not acceptable in cams for us with flat- faced followers.the translational momentum of a body is given by the product mv i.e.,by its mass m times it velocity vector v .
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你能帮帮他们吗