这块钢板的重量是一吨。
知道每个物体的重量是个好主意。
重水之所以重是因为水中氢的重量是普通氢的两倍(它的原子核中有一个质子和一个中子,而不仅仅是一个质子)。
Heavy water is heavy because the hydrogen in it weighs twice as much as ordinary hydrogen (it has a proton and a neutron in its nucleus, instead of just a proton).
The next line says if the weight of i is greater than a w, well then I know I can't put it in.
下一行说的是,如果i的重量比a,w大,好吧,我知道我不能把它放进去。
Item 1 has a weight of 3.
号物品重量是。
Of the weights and the values.
代表的是重量和价值。
应用推荐