Composite shield is characterized by self - driving and cast in site reinforced concrete lining instead of segmental lining.

组合式盾构的特点是能自行推进，可不用装配式衬砌管片，而采用现浇钢筋混凝土衬砌。

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This kind of new cast iron main application on the screw grader, uses for to make the lining iron of screw grader.

这种新型铸铁主要应用在螺旋分级机上，用来制造螺旋分级机的衬铁。

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Based on the ordinary high chromium cast iron foundation, designed one kind of high alloy abrasion-resisting cast iron material which is used to make the lining iron of the screw grader.

在普通高铬铸铁的基础上，研制了一种用于制造螺旋分级机小叶片的高合金耐磨铸铁材料。

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Today is Election Day in the United States, and people all over the country are lining up in polling places to cast their votes.

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