求翻译：压缩关键线路有两种方法。一是修改工程逻辑关系，这样关键线路的长度变短了。这牵涉到原始施工方案的局部修改，重新安排工作顺序。这种时间压缩方法并没有减少工作本身的时间，而是通过更合理地安排工作顺序节约时间。是什么意思？

There are two ways to compress critical path. First, modify the project logical relationship, such a critical path length is shorter. This involves the partial modification of the original construction program, re-organization of work order. The time compression method does not reduce the time of th

Compression key line there are two ways. It is a logical relationship between modifications, so that the key line length is shorter. This involves the original construction of the local modifications, re-organization of the work order. This time compression method has not been reduced and the work i

The compression essential line has two methods.One, the revision project logic relations, the such essential line length shortened.This involves to the primitive construction plan partial revision, again job placement order.This time compression method has not reduced works itself time, but is saves

Key line there are two methods of compression. Is to modify the engineering logic, critical path length was shorter. This involves the local modification of the original construction plan, and rearrange the order. This compression does not reduce working time itself, but through a more rational orga

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