| 1. | In species of pines which are polycyclic flower initiation must occur over a wide time range . 具有多环球花的松树属种,其花的孕育期会延续较长的时间。 |
| 2. | Evolutionists have recently learned that groups of species also have what might be called a half-life . 进化论者最近发现生物属种也具有一种可以称为半死亡期的时期。 |
| 3. | In the other case, a kind of pseudoextinction takes place, and the species may evolve into a new species . 另一种方式是出现了一种假绝灭,该属种可能演变为另一新种。 |
| 4. | Studies in getting hybrids plants of interspecific hybridization through ovule culture in vitro 利用胚珠培养技术培育棉属种间杂种植株的研究 |
| 5. | Wood preservatives - determination of toxic values against reticulitermes species european termites laboratory method 木材防腐剂.防犀白蚁属种 |
| 6. | Wood preservatives - determination of toxic values against recticulitermes species european termites laboratory method 木材防腐剂.防犀白蚁属种 |
| 7. | Wood preservatives - determination of preventive action against reticulitermes species european termites laboratory method 木材防腐剂.对犀白蚁属种 |
| 8. | Wood preservatives - determination of preventive action against reticulitermes species european termites laboratory method 木材防腐剂.对犀白蚁属种 |
| 9. | An identification key of chinese ophichthidae is provided for each of the 13 genera and 33 species recognized 对中国已有种类进行了详尽的整理,编制了包括13属33种蛇鳗科鱼类的属种检索表。 |
| 10. | The taxonomy position of some genera and the phylogeny of the acanthaclisini , myrmeleontini and dendroleontini are discussed 讨论了一些属种的分类地位及蚁蛉科中三个重要族的系统发育关系。 |