This is a very simple and useful method in practice because it is not necessary to asunune a distribution of the project duration.
该方法不需要对各工作延续时间的分布作出假定，因此具有广泛的实用性。
Mounting of a plate becomes very easily in this machine with an electric motor. It is not necessary to adjust the plate length or the position of the progressing switch.
装版顶尖用电动一次性装定，长度不用手调，装版时免调整行程开关位置。
Mounting of a plate becomes very easily in this machine with an electric motor. It is not necessary to adjust the plate length or the position of the progressing switch.
装版顶尖用电动一次性装定，长度不用手调，装版时免调整行程开关位置。
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