| 1. | The ring sum of two circs is a circ .
两个广义圈的环和是一个广义圈。 |
| 2. | In fused-ring and bridge-ring compounds two carbons are common to the two rings .
在稠环和桥环化合物中，两个碳原子是两个环公用的。 |
| 3. | In fused-ring and bridged-ring compounds two carbons are common to the two rings .
在稠环和桥环化合物中，两个碳原子是两个环公用的。 |
| 4. | Accordingly, a whole series of concentric bright and dark rings will surround the central spot .
因此，环绕着中央点将会有整整一系列同心亮环和暗环。 |
| 5. | When considering this response it is convenient to look at closed-loop and open-loop control situations separately .
在研究这一反应时，分别观察闭环和开环操纵情况是方便的。 |
| 6. | One type is the iconoscope. it contains three essential parts--a mosaic, a collector ring and an electron gun .
一种是光电摄象管，它有三个基本部件--嵌镶光电阳极、集电环和电子枪。 |
| 7. | On weakly unit - regular rings and strongly stable rings
关于弱幺正则环和强稳定环 |
| 8. | The middle superprime rings and middle superprime radical
中间超素环和中间超素根 |
| 9. | Grading ring , shielding ring , grading and shielding ring
均压环屏蔽环和均压屏蔽环 |
| 10. | Buoy chains shackles , swivels , swivel hooks
浮标锚链卸扣锚转环和转钩 |
