| 1. | A few small factories , using small and simple machines have been able to turn out parts for large machinery .
几个小厂用蚂蚁啃骨头的办法造出了大型机件。 |
| 2. | The pulley is considered one of the five simple machines
滑轮被认为是五种简单机械之一。 |
| 3. | Levers and pulleys are simple machines
杠杆和滑轮是简单机械。 |
| 4. | Such a complex machine as the diesel engine is simply a combination of simple machines
象柴油机那样复杂的机器只不过是简单机械的组合。 |
| 5. | Ways have been found to process large and complicated machine parts by using small and simple machines
人们找到了利用小的简单的机器加工大的复杂的机器零件的办法。 |
| 6. | Such a simple machine , with its high center of gravity , would be able to move quickly in any direction
由于机器结构相当简单，加上重心偏高，因此能朝任何方向快速移动。 |
| 7. | From your daily experience and from your study of simple machines , you probably know a bit about friction
从你的日常经验和对简单机器的研究中，你就会了解一点儿有关摩擦的知识。 |
| 8. | Part of the franklin institute online website : an introductory explanation of simple machines and various launching points
富兰克林学院的网站：关于简单的机械和各种各样的观点的介绍性的解释。 |
| 9. | Section of the exploring leonardo ' s website . vivid introduction to real world applications of simple machines and related inventions
探索列昂纳多网站的章节。生动的介绍了现实世界中简单的机械和相关的发明。 |
