The other kind of study is that which has arisen from the recognition of host specialization by parasitic species . 另一类研究是由于寄生菌种对寄生专化性的认识而产生。
Such additions to the negative paste produced the desired performance with the use of synthetic separators . 这类负极板添加剂随着使用合成材料隔板而产生合乎需要的性能。
The gravitational attractions of the pieces of dust for one another might make them form little lumps . 尘埃片与片之间由引力而产生的吸引，可能会使它们形成一些小的团块。
This may be due to the settlement of foundations or to a differential temperature movement of supporting piers . 这种运动可以是由于基础沉降或由于支墩因不同温度变化而产生。
Sewall wright has furnished a theoretical basis for calculating the effects of isolation by distance . 对于计算因距离而产生的隔离效果，赛沃尔劳埃特已经提供了理论上的根据。
No one supposes that our choicest productions have been produced by a single variation from the aboriginal stock . 没有人设想我们精选的产物，是从它们的原种仅经一次变异而产生的。
Only later were the tissue isolates reduced to their minimum size to produce the maximum relative growth rates . 只有到后来，离体组织减少到它们的最小体积而产生最大的相对生长速率。
How can a series of motionless, or still, pictures be blended on a screen to produce motion pictures ? 怎样才能把一连串不动的，或者说静止的画面连接在一起放映到银幕上而产生活动的影片呢？
The fish is preserved uncleaned and it appears that the nitrosamines are produced by the action of salt-tolerant bacteria . 鱼是未整理干净就腌的，亚硝胺有可能是由耐盐细菌的作用而产生的。
None of these was premeditated but sprang spontaneously out of the talk of black boys who met at the crossroads . 这些不是经过深思熟虑而产生的，而是听到那些路上相遇的黑孩子们谈话产生出来的。
