单词	product system
释义	product system 生产系统
随便看	specular surface concrete specular surface measurement specular tranmission density specular transmission specular transmissiondensity specular transmission density specular transmittance specular working speculary speculate speculate about speculate about/upon the future speculate and profiteer speculate as to speculate casually speculated speculate for speculate for a fall speculate for a rise speculate in Speculate in coffee speculate in foreign currency speculate in oil shares Speculate in stocks speculate logic