Evidence from isotopic dating suggests that the greenstone belts vary considerably in age.来自同位素年龄鉴定的证据指出,绿岩带在年龄上彼此变化相当大.Both the well - preserved greenstone belt and TTG - reworked granite - greenstone belt are favorable...
你用的胶卷感光度是多少?What's the speed of the film you're using?从理论上来讲, 数码相机的感光度越高,拍摄效果越好.Theoretically speaking, the higher sensitivity of digital camera to photograph the better.和我们用普通胶卷时的感光度差不多.And we use sensitivity ...
凡是在继续开采的矿区，都设置了纠察队。There was widespread picketing of mines where work was continuing.壳牌石油公司签订了一份开采阿尔汉格尔附近的石油和天然气资源的合同。Shell signed a contract to develop oil and gas reserves near Archangel.他靠开采银矿积累了一笔财富。He amassed a fort...