黄铜 、 铜 、 不锈钢 、 铋及铅都是适合的.Brass, copper, stainless steel, bismuth, and lead are all suitable.确定了锌铋多元合金的最佳配方.The most preferred components of hot galvanizing Zn - Bi alloys are determined.目的研究壳聚糖铋对大鼠实验性胃溃疡模型的影响.Aim To study...
The door flew open and Miranda tore into the room.门猛地开了，米兰达闯进房间。Miranda shrieked with laughter.米兰达尖声大笑。As he was to tell Miranda later, he as near as dammit left it there.像他随后告诉米兰达的那样，他几乎没碰它。...
He was trying to keep out of the bird's line of sight.他试图躲到那只鸟看不到的地方。Peg down netting over the top to keep out leaves.用销钉在顶上加固防护网，防止叶子落入。She stamped her feet on the pavement to keep out the cold.她在人行道上跺着双脚取暖。...
These chemicals modulate the effect of potassium.这些化学物质可以调节钾的功效。Fruits, vegetables, and wholegrains are rich in potassium.水果、蔬菜和全谷物富含钾元素。The potassium content of foodstuffs is very variable.食物中钾的含量差别很大。...