The main copper minerals are malachite, chrysocolla, little chalcopyrite, chalcosine and even little bornite and covellite. 矿石主要含铜矿物为孔雀石 、 硅孔雀石, 少量的黄铜矿 、 辉铜矿及极少量的斑铜矿和铜蓝等.
“我们该怎么办？”米尔顿又用平板而单调的声音问道。"What shall we do?" Milton said again in a toneless voice.米尔顿长长地呼出一口气。Milton let out his breath in a long exhalation.米尔顿被领到了办公室。Milton was shown into the office....
她每星期打3次网球。She plays tennis thrice weekly.连本地托儿所每星期都要收费100英镑。Even local nurseries charge £100 a week.女仆每星期换一次床单。Once a week, a maid changes the sheets....
The news gave a fillip to the telecommunications sector.这个消息给电信部门注入了一针强心剂。technological developments in telecommunications电信技术的发展Futurists agree that these trends will grow as telecommunications networks become cheaper a...
She curried favor with the leader by contemptible means.她用卑鄙的手段博取领导的欢心.Fresh ham, curried beef?鲜火腿?咖喱牛肉?To offset weak traditional loyalties , he has curried favour by lavish ministerial appointments.为了抵消那些传统的忠贞不渝, 他谄媚般慷...
The supporting case is the outer enclosure of the gyro component.支承壳体是陀螺组件的外壳.The pendulum - torque type of erector is extensively employed on gyro verticals.陀螺垂直器上广泛地采用由摆和力矩马达组成的修正装置.The pendulous accelerometer design h...