放大倍数为实物大小的833,333倍。The magnification is 833,333 times the original size.八是四的倍数.The number 8 is a multiple of 4.他们的数制源自古巴比伦人，以数字6的倍数为基数。Their numerical system, derived from the Babylonians, was based on multiples of the n...
I was a dunce at chemistry.我在化学方面是个劣等生....a chemistry textbook.化学课本Ester is one of the most important compounds in Organic Chemistry.酯是有机化学中最主要的化合物之一.It was by using anima that Besant and Leadbeater could observe atoms a...
排气中最大量的排放物是在怠速和低速运行时产生的.The greatest amount of exhaust emissions are produced at idle and during low - speed operation.澳大利亚的野生动植物也遭受到汽车有毒排放物的侵害.The Australian wild life also suffers from the cars'toxic emissions.所有汽...