For using pumping concrete correctly and accelerating project schedule, hold out some considerable problems by science and the engineering execution regularity.
对商品混凝土的使用，加快工程进度，按科学、按工程规律施工提出一些值得思考的问题。
For using pumping concrete correctly and accelerating project schedule, hold out some considerable problems by science and the engineering execution regularity.
对商品混凝土的使用，加快工程进度，按科学、按工程规律施工提出一些值得思考的问题。
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