但这是与欧洲混乱债务划清界限的先决条件。
But it is a prerequisite for drawing a line under the European debt mess.
事实推定适用的条件是适用事实推定抑或适用证明责任裁判案件的界限；
The requirements for the application of the presumption of fact lie in their application boundary.
通过室内实验，研究了气井水化物生成的温度、 压力界限和破坏水合物生成条件。
To this problem, the forming mechanism and rules of gas well hydrate were studied.
通过室内实验，研究了气井水化物生成的温度、 压力界限和破坏水合物生成条件。
To this problem, the forming mechanism and rules of gas well hydrate were studied.
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