by fractions

基本解释

This paper states that petroleum resin is synthesised by using fractions of C_9, which are the by-product of Daqing ethene unit.
研究了利用大庆乙烯生产装置副产的C＿9 馏分合成油溶性石油树脂。
Those of you may have seen Superman 3 or Office Space, this little scam where they make money in the financial markets by scheming fractions of pennies off.
你们可能已经在Superman，3和Office，Space见识过，这些骗局就是通过这个方法从金融市场上,一分一厘地窃取钱财的。
Samson. Methods:B16 cells were cultured in vitro, effects of fractions of PcPS and the supernatant liquid of spleen cells treated by fractions of PcPS on B16 cells in vitro were observed.
方法：体外培养小鼠黑色素瘤细胞B16，观察各多糖组分及其刺激脾细胞上清液对B16细胞的抑制作用。

Skiing,speed skating, luge and bobsled are all Winter Olympics sports usually decided by fractions of a second.

Leveling the platform is a particularly important step -- after all, if things are off by mere fractions of an inch, it can screw prints up completely.
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Casio has redesigned the ClassPad series' software keyboard to make this new model easier to use, organizing functions to correspond to three levels of learning difficulty, beginning with basic functions used by everyone like fractions, square roots, and trigonometric functions, then advanced functions like differential calculus, complex compound numbers, and sigma calculations, and finally even more advanced calculations including piecewise and user-defined formulas.
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By Tompion's death, in 1713, daily variation was less than a minute, and by the late 19th century, marine chronometers were accurate to fractions of a second per day.
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