道渣的来源由承包商确定。
The sources of ballast shall be identified by the contractor.
铁路专用道渣石、公路石渣、加工、销售。
Road slag stone railway, road debris, processing and marketing.
路基就是上面铺着道渣，枕轨和钢轨的底基。
Road bed is the subgrade on which are laid the ballast, ties and rails.
砖材用于建造房屋，或将其破碎作为混凝土骨料和铺道渣。
These are used for building or are broken down for use as an aggregate for concrete or as ballast chippings.
如轨道基准面、道渣厚度、轨道平直度等不合格，塔机运行晃动或歪斜；
Such as track datum, ballast thickness, flatness of the track is not qualified, the tower crane swing or skew;
基于对双通道渣油气化喷嘴喷雾性能和炉内停留时间分布的研究，提出了炭黑颗粒的分布模型。
A distribution mod-el of soot particles has been proposed based on the atomization characteristics of twin-fluid gasification burner and the residence time distribution (RTD) of the gasifier.
基于对双通道渣油气化喷嘴喷雾性能和炉内停留时间分布的研究，提出了炭黑颗粒的分布模型。
A distribution mod-el of soot particles has been proposed based on the atomization characteristics of twin-fluid gasification burner and the residence time distribution (RTD) of the gasifier.
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