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- A new power saving pumping unit with fan-shaped crown sheave and flexible connecting rod is developed based on the conventional beam pumping unit. 在常规游梁式抽油机的基础上,设计了一种新型柔性连杆变矩节能扇形抽油机,其特点是结构简单紧凑,天车轮可以实现大摆角,易实现长冲程,节能效果显著。
- Keywords energy saving pumping unit;involute;crown sheave;optimum design; 节能;抽油机;渐开线;天轮;优化设计;
- The crown of St Wenceslas was in prague cathedral. 圣文萨斯雷的皇冠保存在布拉格大教堂。
- Analysis of kinetic and dynamic characteristics of pumping unit with crown sheave 天轮式抽油机的运动和动力特性分析
- The crown was beset with diamonds and jewels. 皇冠上镶嵌着钻石和珠宝。
- Keywords pumping unit;variable torque;power saving;fan-shaped crown sheave;long stroke;optimum design;behavior simulation; 抽油机;变矩;节能;扇形天车轮;长冲程;优化设计;性能仿真;
- Our flag is raised to the top of a pole by a rope and two pulley. 我们的旗帜被用一根绳子和两个滑轮升到了竿顶。
- He drew a sheaf of papers from his breast pocket. 他从上衣口袋里抽出一札文件。
- A major has a crown on the shoulder of his uniform. 一名少校在制服的肩部有个王冠形的纹章。
- Prince Charles is the legal heir of the crown. 查尔斯王子是王位的合法继承人。
- That ring is beans compared with the crown jewels. 与皇冠上的宝石相比那枚戒指根本不值什么钱。
- She laid claim to her father's crown. 她根据权利要求继承父亲的王位。
- The speaker had a sheaf of notes on the desk in front of him. 演讲者在他面前的桌子上放着一叠笔记。
- A crown for covering or sealing a tooth. 齿冠遮盖或密封牙齿的冠状物
- The lifting device is a system of rope and pulley. 这种起重装置是由缆索和滑轮组成的。
- It was cold, raining, and, to crown it all, we had to walk home. 天气寒冷，又下著雨，而最倒霉的是，我们得走著回家。
- The keystone in the crown of an arch. 拱顶石位于拱顶的塞缝石
- They reeved the rope through the pulley. 他们把绳索穿过滑轮。
- A soft felt hat with a deeply creased crown. 特里碧帽一种有锯齿形帽峰的软毡帽
- The lower part of a pulley block. 滑车组较低的一部分
