| 1. | Crack propagation usually begins slowly .
裂纹的增长常常是开始缓慢。 |
| 2. | Time deviation due to propagation delay can be tolerated .
允许存在传输延迟所引起的时间漂移。 |
| 3. | He discussed the propagation of waves through the earth's interior .
他探讨了地震波在地球内部的传播。 |
| 4. | So far we have described the propagation of alternating magnetic fields .
至此我们讨论了交变磁场的传播。 |
| 5. | It is the reverse of the propagation step in addition polymerization .
这一过程是加聚反应历程中链增长步序的逆过程。 |
| 6. | Initially 24 mm holes were drilled at the crack tips to arrest propagation .
最初，在裂纹尖端钻24mm的孔以阻止其扩展。 |
| 7. | The method is a direct simulation of the actual process of radiation propagation .
这种方法是辐射传输实际过程的直接模拟。 |
| 8. | Clonal propagation can also give some large gains in a relatively short time .
繁殖无性系也可以在较短期间内提供较大的增益。 |
| 9. | Vegetative propagation of nuts has been successfully practised for over 2, 000 years .
坚果的无性繁殖已被成功地应用了2000多年。 |
| 10. | Also, the idea of progress and its enthusiastic propagation may have some effect .
还有，进步观念及其热烈宣传也会产生某种效果。 |
