Under unfavourable work conditions a dangerous section forms on the inner wing of the joint between sprag and grip, where the stresses are concentrated.

木材抓具的抓爪，在不利工况下的危险截面是位于撑杆与抓爪联结爪耳处的内缘，该处所受应力最大。

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Mann named Hale, Dozhier and University of Arkansas Little Rock professor Jimmy Peck as members of a right-wing inner circle, along with David Henderson and Steve Boynton, who she identified as the "Washington" end of the Richard Mellon Scaiffe-funded operation she witnessed.

CNN: By Terry Frieden and Pierre Thomas/

The current right-wing resurgence has more to do with the inner dynamics of American conservatism in the past half century.

NEWYORKER: Confounding Fathers