So this is a process of getting the rates by using a simple approximation here. Simple limiting case.
那么这是一个用简单近似得到速率的过程，简单的极限情况。
For the limiting case of a crack, the stress state in the vicinity of the crack tipis given.
在裂缝的极限情况下，还给出裂缝尖端附近的应力解。
Hence the use of partially coherent (incoherent field as the limiting case) field shows practical advantage.
部分相干光(极限情形为非相干光)具有实用的优势。
Hence the use of partially coherent (incoherent field as the limiting case) field shows practical advantage.
部分相干光(极限情形为非相干光)具有实用的优势。
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