从半环同态的角度出发，给出了半模的一个等价定义。
In this paper, give an equivalent definition of semi-module.
对单线铁路隧道全环整体模筑衬砌台车和施工工艺进行了研究。
The platform and the construction technology for full-circular monolithic lining are studied.
树脂充模是RTM工艺成型过程中的重要一环。
The molding filling process is a very important phase in RTM.
树脂充模是RTM工艺成型过程中的重要一环。
The molding filling process is a very important phase in RTM.
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