您要查找的是不是：
- Drawwork system can adopt teo types: drum hoist and double drum hoist.The main drum hoist adopts integral Ribas rope slot. 绞车系统可采用单滚筒和双滚筒两种形式，主滚筒采用整体式里巴斯绳槽。
- Along with the continual increse of the cargoes of a drum hoist,we usually fortify the thickness of the drum to ensure the drum's strength. 随着提升机的货载量不断加大,为保证卷筒强度,通常采用增加壁厚的办法,但这却给钢板的加工、焊接带来很大的困难。
- Dynamic research on cage elastic supporting impact of a drum hoist 缠绕式提升罐笼弹性承接冲击动力学
- Keywords drum hoist;stel rope;extrusion and friction checking computation; 缠绕式提升机;钢丝绳;“咬绳”验算;
- It is clear to all of us that two plus two is four. 二加二等于四对我们大家都很清楚。
- He wove four plots together into a novel. 他把四条情节编成一部小说。
- We have tea at four o'clock in the afternoon. 我们在下午四点钟喝茶。
- The town boasts four swimming pools. 这座城镇以拥有四个游泳池而自豪。
- Our football team won by four goals to nil. 我们的足球队以四比零取胜。
- He lay back and hit the ball for four. 他向后弯身击中球，得了4分。
- I was clean broke in less than four days. 不到四天我就一个钱也没有了。
- I'll look out for you at about four. 我4点钟左右找你。
- He showed us four case studies of disturbed girls. 他给我们看了4位精神失常姑娘的病历。
- My house is four miles distance from the sea. 我家离海四英里。
- Our team beat them hollow by four clear goals. 我们队以净胜4分彻底击败了他们。
- The leap year comes around once in four years. 每四年有一个闰年。
- cylindrical drum hoist 缠绕式提升机
- The soldiers counted off from the left by four. 士兵们从左起四个一组大声报数。
- He wooed four girls before finally marrying one. 他在结婚之前曾向四个姑娘求过婚。
- conical drum hoist 圆锥绞筒提升机
