决定如何开始将系统分割成元素，元素的协作将提供服务，满足范围级上系统的要求。
Decide how to initially partition the system into elements whose collaborations will provide the services satisfying the needs placed on the system at the context level.
如将图像按不同的灰度范围加以分割，则必须取多个门限。
We must get many thresholding for segmentation picture when we used different range of gray-level.
目前我国婚姻法所规定的离婚财产分割制度，在确立夫妻共同财产的范围上过于狭窄，需要加以扩大；
It's necessary to improve the divorcing partition system under the present marriage law of China, for it is too narrow in defining the range of common property of the couple.
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