i watched skeptically as he wrapped a tin can with a piece of drawing paper dampened with a special liquid, then linked the can to the positive pole of a battery.
我心怀疑虑地看着他用一张被特殊溶液浸湿的图画纸把一只锡罐包起来,然后将锡罐与电池的正极连接好。
the action of the negative pole of a magnetic needle is just as real as the action of the positive pole . to decline is to accept--the other alternative.
一根磁针阴极的作用和阳极的作用都是一相真实的;拒绝也是一种接受——这些都是二中择一的选择。
in the experiment we try to find out some ways to improve the performance of the positive pole through the study of positive active material and anode grid.
在实验中我们力图想通过添加剂的研究和板栅的研究找出提高正极性能的办法。
as the positive pole of one h2o attracts the negative pole of another, the molecules cling tightly together.
当水分子的正极吸引另一分子的负极时,两个分子a紧密连接在一起。
the first soft metal layer and the second soft metal layer are correspondingly plated on the contacts of the positive pole and the negative pole of the dry battery.
第一软金属层和第二软金属层是对应镀在干电池的正电极的触点上及负电极的触点上。
the lumo orbit energy level of polythiophene turned negative with the lithium ion intercalating into, and became the positive pole of the cell reaction that received electron.
聚噻吩在嵌入锂离子时lumo轨道能级变为负值,成为电池反应得电子的正极。