单词	无保护层的
释义	无保护层的 unprotected
随便看	cross section of array cross-section of array cross section of a stream cross-section of beam cross-section of box beam cross-section of bridge cross-section of cable cross section of cave cross-section of channel cross section of conductor cross-section of conductor cross section of core cross-section of coupling beam cross section of fiber cross section of fission cross section of flow cross-section of fuel-metering orifice cross-section of grain crosssection of load cross section of load cross-section of load cross section of nuclear reaction cross section of passage cross-section of rail cross section of reaction