他们瞄准了每个极点,读出测量值,然后用这些测量值来计算每个增量上的海拔变化。
They sighted each pole, reading off measurements that were then used to calculate the change in elevation over each increment.
为了测量两极之间的高程差,测量员在两极中间的一个水平基座上使用了光学水准望远镜。
To measure the difference in elevation between poles, surveyors used an optical level—a telescope on a level base—placed halfway between the poles.
当威廉·史密斯长大一些,他用自己的一点积蓄买了一些书,自学测量学,并且他18岁时在当地教区做了一名测量师的学徒。
When he grew older, William Smith taught himself surveying from books he bought with his small savings, and at the age of eighteen he was apprenticed to a surveyor of the local parish.
You could run the reaction, take solid iron gaseous oxygen, form iron oxide, measure the heat of formation of it, tabulate it.
你可以进行一个反应,用固态铁和氧气生成氧化铁,测量它的生成热,列成表格。
Again they've just done that experiment and seen the effects of that on the point measurement with the whole pro.
通过实验,他们便能看到其效果,通过在整个过程中,对点的测量。
It's related to the heat capacity, the constant volume of heat capacity and something you could measure.
它联系了热能,恒容热容和一些,我们能够测量的物理量。
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