1、

This paper introduces the successful experience of over roadway extraction in complex geology that has roof step, face roof collapse with cavity, passing through fault etc.

介绍了135采煤队在顶板台阶下沉、漏顶、压力大、过断层等复杂地质因素影响下,跨巷道高档普采成功回采的经验。

互联网摘选

2、

Nothing above but clear empty space till arrived the roof, so nobody could step in that area.

上面是空空的空腔一直通到屋顶,没有落脚点可以供人进出。

互联网摘选

3、

Step 3 Press your tongue to the roof of your mouth and, again, wait several seconds for relief.

3.舌尖顶住嘴巴上部,坚持几秒钟可以缓解。

互联网摘选

4、

Apply the Orthogonal experiment to ratio of the model material, set up the model and observe to determine the pressure step pitch of the coal seam and the top roof and baseboard, so as to analyze the pressure law.

采用正交实验法进行模型材料的配比,之后建立模型,观察,确定综放工作面煤层及顶底板的来压步距,并对其来压规律进行分析。

互联网摘选

5、

Take the sand-asphalt cushion displacement of# 1 floating roof tank in Linyi Initial Station as an example, this paper introduces the lifting process of pontoon's center stand, lifting step, calculation of lifting force and method of material selection.

以临邑首站1号浮顶罐罐底板和沥青砂垫层全部更换为例,介绍了浮船中央立柱提升技术的施工工艺、施工步骤及提升力计算和材料选用的方法。

互联网摘选

  • 今日热词
  • 热门搜索

英语网英语词典(dict.25820.com)为您提供在线翻译英语词典单词大全英译汉汉译英等英语服务!可按单词字数词义分类查询。支持lj:关键词格式查询例句。

用户反馈
请选择反馈类型(可多选):
您的联系方式:
反馈内容:
提交成功 小编会尽快处理
回到顶部
点击反馈