concave surface

基本解釋

Objective To analyze the marks on the concave surface key.
目的運用光學儀器研究內凹齒鑰匙痕跡形態(tài)特征。
Regular concave surface profiles are adopted for many friction surfaces, but the surfaces are seldom studied using lubrication theory.
規(guī)則凹坑表面形貌在許多摩擦副中被采用，但目前為止仍缺乏理論指導。
It was found that there was large residual compress stress on the concave surface of metal-sheet, but low residual tensile stress on the fringe of convex surface.
在薄板成形后的凹面分布的是較大的殘余壓應力，而凸面邊緣存在較小的殘余拉應力；
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Cool Earth's insight was that if you coat only one half of a balloon, leaving the other transparent, the inner surface of the coated half will act as a concave mirror.
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