There are four major disciplines in earth sciences, namely geography, geology, geophysics and geodesy.地球学又分为四大类, 即地理学, 地质学, 地球物理学和测地学.Physics and astronomy are cognate sciences.物理学与天文学是互有关联的科学.Most seem to come from tech...
The two stresses can then be added algebraically to obtain the resultant.然后将两种应力代数相加就得到合应力.It is much easier to indicate how to find the mean by expressing the procedure algebraically.用代数的方法来表现这个过程,就更容易说明平均数是如何求得的.First ...
我花大笔钱购置了上班时穿的漂亮新套装。I spent lots of money on smart new outfits for work.那里的通勤一族平均上下班要花5个小时。The average commuter journey there is five hours long.椅座上又铺回了花毯。The seats of the chairs had been recovered in tapestry....