Mesenteric angiography is the definite method for diagnosis.

肠系膜上动脉造影有助于早期诊断。

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There could exist no 'definite method' for solving all mathematical questions.

不可能存在一种“机械的过程”来解决所有数学问题。

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At the same time, has given the grid division method and the time step definite method.

同时，给出了网格划分的方法和时间步长的确定方法。

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The use of pictures certainly seems the most intuitive method for navigating around videos -- there's a definite learning curve here, and it's hard enough to select pictures -- we couldn't really imagine toggling through small text.

ENGADGET: Haier's Eye-Control TV set, we go eyeballs on (video) HD