1. Excavate coal is primary production link in coal mine production, therefor, Weaving excavate coal working face supersedure plan has instructional meaning. 采煤是煤矿生产中的主要生产环节，因而编制采煤工作面接替计划对煤矿生产具有指导性意义。
2. Roadheader is a part profile tunnel boring machine which can excavate, convey rock blocks and walk by itself. It is very suitable to excavate soft-rock tunnel. 臂式掘进机是一种集开挖、装碴和自动行走于一体的部分断面隧道掘进机，它非常适用于软岩隧道的掘进。
3. To allow renovations to be completed, scientists pioneered a new technique to excavate the bones. 为了使翻新工作可以完成，科学家利用了一种新技术来挖掘骨骼。
4. The paper trys to excavate the quintessence of Confucianism from the angle of social security system, social security idea and social security tradition. 本文试从社保制度体系、保理念和社保传统角度挖掘孔孟社会保障思想中的精髓以为今鉴。
5. To allow renovations to be completed, scientists pioneered a new technique to excavate the bones. 为了能够重现完整的骨架，科学家们想出了发掘遗骸的新方法。
