We must improve fatigue strength of elements in saw chain for prolonging lifetime of saw chain.

要提高锯链的使用寿命，必须提高锯链零件的疲劳强度。

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This article made a stress analysis into the drive link for saw chain by means of finite element method.

用有限元法对锯链的传动链片进行了应力分析。

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The present invention relates to a motor chain saw (1), including a guide track (5) and a saw chain (6) being driven in circulation about the guide track (5).

本发明涉及一种机动锯(1)，它具有一个导向轨(5)和一个围绕该导向轨(5)循环驱动的锯链(6)。

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One of the guys was presidential candidate Mitt Romney, on his knees, wearing goggles and using a chain saw.

FORBES: The Mitt Romney You Don't Know (Yet)

How about a WD-40 grease gun, or paraffin lube stick for windows, or lithium spray grease or two-stroke oil for your chain saw?

FORBES: Johnny One-note

Soon he was testifying to the U.S. Senate and depicted on the front page of the New York Times tearfully felling the trees with a chain saw.

FORBES: Magazine Article