Silicate minerals are characteristically refractory and difficult to break down.硅酸盐矿物的特点是耐熔和难以分离.refractory metals难熔金属The key to treatment of refractory ores is preoxidation and deleading absorption of carbon on gold.这些方...
Silicate minerals are characteristically refractory and difficult to break down.硅酸盐矿物的特点是耐熔和难以分离.Reflux leads to recurrent or refractory aspiration pneumonia.反流可引起复发的难治的吸入性肺炎.Successive bouts of heart failure are apt to ...
他那雪亮的眼白在褐色的脸上炯炯发光.The white of his eyes shone in his sun - brown face.他的眼白因缺乏睡眠而充满血丝.The whites of his eyes were bloodshot from lack of sleep.等你能够看到他们的眼白时再开火.Hold your fire until you can see the whites of their eyes....
一节沟槽a length of guttering一些砂洲和沟槽在低潮位时,露出于水面.Some of the bars and troughs are exposed by low tide.极耳产生一种 “ 压力 ” 作用与沟槽侧边相接触.The lug produces a " pinched " effect contact with the groove side....