Following good precision and repeat of instruments, the author measures surface tension of Shenhua and Shengli coal liquefied fractions. The change rules of surface tension with cutting fraction temperatures and experimental temperatures are explored.
使用纯化学试剂苯、甲苯、环己烷和正庚烷对实验仪器的准确度和重现性进行校正后,实测了神华煤和胜利煤液化油各窄馏分的表面张力,归纳了神华煤和胜利煤液化油馏分的表面张力随窄馏分的切割温度以及测试温度的变化规律。
参考来源 - 煤液化油馏分的表面张力研究·2,447,543篇论文数据,部分数据来源于NoteExpress
I'm not sure I want to change rules, but I'd like the police to be stricter on the rules.
我不确定我是否想要改变规则,但我希望警察能够更严格地执行规则。
Finally, we will show you how to change rules at runtime.
最后,我们将演示如何在运行时更改规则。
The rules architect must provide business users with an interface to change rules.
规则架构师必须为业务用户提供更改规则的界面。
They hope to change rules and customs to avoid another such meltdown in the future.
VOA: standard.2009.09.25
We need to change our rules just slightly.
我们需要稍稍改变我们的规则。
But Amy Ramirez and Cheryl Gilman both say foreign students should understand that visa rules change often.
VOA: special.2009.07.02
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