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- flat reaming head 平夹式扩孔钻头
- The use of sequential reaming head for raising is a new technology,which can make a small-sized drill to be used for boring a large-sized raise. 用迈步式扩孔刀头钻凿天井是一项新技术，该技术能够用小钻机钻凿大天井。
- Keywords Raise borer;Reaming head;Sequential reaming; 天井钻机;扩孔刀头;迈步式扩孔;
- She nestled her head on his shoulder. 她将头依偎在他的肩上。
- The man jacked up his car to fix a flat tire. 那人用千斤顶把他的汽车顶起以修理漏气的轮胎。
- He stumbled over a stump and fell flat on his face. 他给树桩一绊，摔了个嘴啃泥。
- He spread the map flat out on the floor. 他把地图平铺在地上。
- Our present lease on the flat expires next month. 我们这套公寓的租约下月到期。
- The flat will be refurbished for the new tenants. 这套房间将重新粉刷以接纳新房客。
- The deer lowered its head to drink from the pond. 鹿低下头去喝池塘里的水。
- He gave the little boy a clout on the head. 他在那小男孩的头部打了一下。
- She is buying a flat close to her office. 她正在购买一套靠近她办公室的单元房。
- I saw the small girl topple over and hit her head. 我看见那小女孩栽了一跤，碰着了头。
- She lay flat on her back in the warm sunshine. 她在温暖的阳光下平躺著。
- The lease on our flat runs out in a few months. 我们公寓的租约还有几个月就到期了。
- The colours used are flat and unvaried. 使用的颜色既单调又无层次。
- I was dazed by the blow on my head. 我的头挨了一击而觉得晕眩。
- Griddles are used for cooking flat cakes. 这个浅锅是用来烤蛋糕的。
- She leaned her head back and whispered the news. 她向后仰着头，小声说出了这个消息。
- The horse kicked its fallen rider about the head. 那匹马乱踢从它背上掉下来的骑手的头部。
