Magma dynamics describes quantitatively magmatic processes by means of the fluid dynamics method, on which basis theoretical models are constructed.

岩浆动力学利用流体力学的方法定量描述岩浆过程，建立理论模型。

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Upon examining the goods, we discovered to our surprise that they were altogether inferior in quality to the sample on which basis we placed the order.

检验货物之后，我们惊异地发现货物品质低劣，同我们订货时的样品相差甚远。

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The integrative parameter, in turn, can be employed as a quantitative criterion for judging the engine performances on which basis engine early warning signal system can thus be established.

提出了如何利用这些数据得到综合参数，并采用综合参数作为评判发动机性能状况的量化指标以及在此基础上建立发动机预警信号系统的实现方法。

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The insurance industry would come under new regulation under the bill, which would ban the practice of denying coverage on the basis of pre-existing medical conditions.

VOA: standard.2009.11.23

And on the other, a table, which held loaves of bread that were changed on a weekly basis.

另一边是一张桌子，用来摆放长面包,面包一周替换一次。

耶鲁公开课 - 旧约导论课程节选

It is also, I should say, on the basis of this letter, which is why I ask people from time to time to remove their caps in the class room, from the House of Study.

也应可以说是因为这封信，促使我总是要求,课堂上的同学摘下鸭舌帽来听课，至少在学习的殿堂里。

耶鲁公开课 - 政治哲学导论课程节选

There are certain activities which occur on a standardised basis which are covered by clinical governance guidelines, standardise care pathways so that there is a mixture of of local practise and standard national practice.

BBC

Roberts' reasoning for either upholding or striking down the mandate may not command a majority, meaning at least five justices agree on the outcome but not the constitutional basis on which the decision sits.

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This painted a very grim picture of the state of the US economy and has led many to speculate that a fresh round of US stimulus may be in the works which on the basis of supply and demand could weaken the USD.

FORBES: Broad Dollar Weakness Lifts European Currencies