光学显微镜的放大倍数受限于可见光的波长，大约500纳米。
The power of a light microscope is limited by the wavelength of visible light, which is about 500 nm.
HTC的主要对手，诺基亚、三星和苹果，销售了大约其两倍数量的智能手机。
HTC's main rivals, Nokia, Samsung and Apple, still sell around twice as many smartphones.
当那是时，以前大约从一年加倍数字，它仅仅是很少的400 百万加世界范围的因特网用户。
While that's about double the number from the year before, it's only a fraction of the 400 million-plus Internet users worldwide.
海洋生物对有机锡化合物有很强的富集能力，富集倍数大约在5000-10000倍之间。
The marine creatures have very strong enrichment ability to the organotin compounds and the enrichment factor is between 5000 and 10000 times.
海洋生物对有机锡化合物有很强的富集能力，富集倍数大约在5000-10000倍之间。
The marine creatures have very strong enrichment ability to the organotin compounds and the enrichment factor is between 5000 and 10000 times.
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