Explain the value of a really sharp point and edge, the latter, particularly with a double edged knife, being as much to prevent the knife from being seized as for slashing.
解释真正锋利的刀尖和刀刃的价值,后者,尤其对于双刃匕首来说,可以用削划在很大程度上防止对手抓刀。
Axial compression test can use double knife-edge bearing to instead spherical hinge bearing;
轴心受压构件试验可采用双刀口支座代替球铰支座;
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