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Methods Silica gel column chromatography and PTLC were used to separate and purify the compounds from the petroleum ether soluble fraction of ethanol extract.

方法用硅胶柱色谱和制备薄层等方法从乙醇提取物的石油醚萃取部位分离化合物，通过波谱方法鉴定其结构。

Ii is a process with low investment and great profit to use the C5 etherealization product as the blending component of gasoline with high octane number. The C5 fraction is cut from steam cracking and it's diolefins are saturated by selective hydrogenation.

裂解C5馏分选择性加氢饱和二烯烃后，醚化产物作为高辛烷值汽油调合组分是一条投资少、见效快的工艺路线。

They will eat only a fraction of the hundreds of different kinds of eucalyptus.

尤加利树有数以百计的品种，牠们只吃其中一小部分。

To reduce the eutectic in DZ68 alloy, the mass fraction of Ti in alloy should not be more than 1.7%.

为了减少DZ68合金组织中析出的共晶，Ti的质量分数应控制在1.7%以下。

With increasing aluminum content in the alloys, the fraction of primary phase α increases and the eutectoid decreases.

随着铝含量的增多，合金中的初生α相增多，共析体减少；同时合金的硬度和耐磨性随铝含量的增多而增大；当铝含量大于30%时，合金的二次枝晶臂间距变化不明显。

Out-of-core or external memory techniques store the major part of the scene database on disk, and only keep the fraction of the data that is currently processed in main memory.

外核技术或者叫外存技术将大部分的场景数据库存在磁盘中，只将当前需要进行处理的数据加载到内存中。

A critical concentrations of initial water mist mass fraction required for extinguishment have been achieved for the various conditions of flame spread phenomenon.

本文获得了在不同条件下火焰蔓延情况下，灭火需要的细水雾质量分率的关键浓度。

These results indicated that CaCl2 extractable fraction may not pay important role on metal phytoavailahility in the studied soils.

这些结果表明CaCl2提取态Zn、Cd对土壤中该元素的植物有效态可能不具重要贡献，而DTPA提取态金属和金属总量在一定程度上能作为评价土壤中元素植物有效性的标准。

Extractable fraction in n-hexane at 50℃,w/w

50℃条件下，在正庚烷中萃取馏分重量

Each line of the eye chart is assigned a notation in the form of a fraction that represents the individuals visual ability.

在每一行的眼图是指派一个符号，在形式的一小部分代表individual s视觉能力。

I was just taking her hand, to help her out of a car, and I knew it.

我只是握着她的手，扶她下车，但我知道这一切。

China and South Korea have excoriated Japan over its approval of new school books which they say whitewash the atrocities committed during Japanese occupation, and anti-Japanese protests have been held in Chinese cities. The lingering bitterness over Japan's past imperialism still threatens to mar relations between the big East Asian powers

中国和韩国强烈谴责日本通过新的中学历史教科书，他们认为这一教科书掩盖了日本在其占领期间所犯下的残酷暴行，反日抗议活动在中国数座城市发生，历史上日本帝国主义制造的痛楚无法被忘却，这有可能破坏东亚强国间的关系。