concave surface

基本解釋

Objective To analyze the marks on the concave surface key.
目的運(yùn)用光學(xué)儀器研究?jī)?nèi)凹齒鈅匙痕跡形態(tài)特征。
Regular concave surface profiles are adopted for many friction surfaces, but the surfaces are seldom studied using lubrication theory.
槼則凹坑表麪形貌在許多摩擦副中被採(cǎi)用，但目前爲(wèi)止仍缺乏理論指導(dǎo)。
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.
在薄板成形後的凹麪分佈的是較大的殘餘壓應(yīng)力，而凸麪邊緣存在較小的殘餘拉應(yīng)力；
www.jgjs.net.cn

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.
ECONOMIST: Monitor