total construction time

And during the course of construction mental structure products' designing and manufacturing, there're some widespread problems such as long design cycle, high error rate, difficult to total the material, large amounts of information, and time after time rehandling, etc.

但是我国建筑金属结构产品制造企业较普遍地存在着企业规模小，且其产品设计周期长、出错率高、材料统计费时费力、重复劳动工作量较大。

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You also keep a tab on the number of total time zones for the later construction of percentages.

您还可以保持一个关于总时区数的标签，以便将来创建百分比。

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