专业释义
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大断面 - 引用次数：6
Recently pin timbering has been extensive used because the bolting of coal road has mellowed, however the problem of difficult tunnel reinforcement haven’t been solved properly, for example, wide span tunnel, heavy section.
近年来,随着煤巷锚杆支护技术日趋成熟,锚杆支护得到普遍推广应用,但是还不能很好解决大跨度、大断面等巷道支护加固问题。
参考来源 - 大跨度切眼巷道锚杆（索）支护技术研究 -
大型钢材
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双语例句权威例句
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The defects that easy occurred in heavy section ductile iron castings as well as the prevention measures were reviewed.
概述了厚大断面球墨铸铁件易产生的几种缺陷及防止措施。
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The validity of the apparatus to the research on the solidification behavior of ductile iron with heavy section was verified.
验证了这一装置对于厚大断面球 铁 铸件研究的有效性。
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The producing process of a kind of micro-chill suitable for suspension casting of heavy section ductile iron is briefly described.
简要介绍了一种适合于大断面球铁悬浮铸造用微型冷铁的制备工艺；
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