| 1. | There is only one lower-energy orbital in a cyclic system .
在环状体系中只有一个最低能量轨道。 |
| 2. | This is done by a great number of ring-shaped air-jets on the bottom of the craft .
船底装上大量环状喷气嘴就可以做到这一点。 |
| 3. | The tendency of a ring compound to polymerize depends upon the extent of ring strain .
环状化合物的聚合倾向，取决于环的张力大小。 |
| 4. | The outcome is a circular clearing, a plaque, in the lawn of confluent bacterial growth .
其结果是在细菌化合生长的菌坪中形成一个环状清除区，亦即溶菌斑。 |
| 5. | Plasmids are exta-chromosomal doublestranded, circular dna molecules found in prokaryotic and eukaryotic cells .
质粒是在原核和真核细胞中发现的染色体外的双链环状DNA分子。 |
| 6. | Transformation efficiency is greatest with circular plasmids containing only small inserts of passenger dna .
使用带有一小段客座DNA的插入序列的环状质粒进行转化，较率会最高。 |
| 7. | The strength testing of extruded catalysts is complicated by three factors when compared to the testing ringformed catalysts .
挤条催化剂的强度测试与环状催化剂相比，复杂的因素有三。 |
| 8. | The predominance of these series is replaced in turn by benzothiophenes and increasingly complex ring-like compounds in the higher temperature ranges .
在更高的温度范围内，这些化合物的绝大部分又被苯噻吩和更复杂的环状化合物置换。 |
| 9. | Epithelial cell defenses include the ciliated epithelial cells, goblet cells, and other secretary epithelial cells of the tracheobronchial tree .
表皮细胞的防御包括起纤毛作用的表皮细胞、环状细胞和气管支气管树的其他起分泌作用的表皮细胞。 |
| 10. | Ractical boundary in helicopter vortex - ring state
直升机实用涡环状态边界的确定 |
