yA Over yA of one. Minus yA of two, and I just want to, in some sense, finish up by making the obvious substitution, which is, of course these are mole fractions.

除以1的yA，减去2的，我只想，从某种意义上，得到更加简单的取代形式，当然这些是摩尔分数。

youdao

A multitude of separations are accomplished by distillation, but its most important and primary function in the refinery is its use for the separation of crude oil into component fractions.

许多分离过程是通过蒸馏进行的，但蒸馏在炼油厂中的最重要和主要的功能则是它在将原油分离成不同馏分过程中的作用。

youdao

Similarly, with LPARs, you can achieve a greater degree of control over the usage of resources-by allocating entire processors or precise fractions of processors to an LPAR, for example.

类似地，使用LPAR，您可以对资源的使用进行更大的控制，例如，通过将整个处理器或者处理器的一部分精确地分配给lpar来实现。

youdao

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

VOA: standard.2010.02.15

You miss out by one match - we are divided by fractions.

BBC: US secure emphatic Ryder Cup win

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.

ENGADGET: MakerBot Replicator impressions: the dawning of 3D printers in every home?

The draft primary curriculum for maths, due to be introduced in schools next year, contains plans for pupils to memorise their times tables up to 12 by age nine, multiply and divide fractions by age 11, as well as learn topics such as geometry, long division and multiplication and decimals.

BBC: Primary maths plan threatens 'too much too soon'