Chain reaction between drought and excessive rain and management for irrigation works 旱涝灾害的链锁反应与水利工程管理
2.
The pcr products were electrophoresed on 3 % agarose gel and visualized under uv light 聚合酶链锁反应的产物以3 %琼脂电泳分离并在紫外光下观察结果。
3.
Floors may be compartmentalized like naval vessels to stop the spread of frame failures and fire 为了对付大火引发的链锁反应，各楼层也许可以像军舰一般隔离起来，阻止支架崩溃与大火的蔓延。
4.
A 40 - base polymorphic repeat sequence located in the 3 ' - untranslated region of the dat gene was purified and amplified by polymerase chain reaction ( pcr ) 将位于多巴胺运输器基因3 '端未转译区段的40 -碱基多形性重复序列予以纯化、经聚合酶链锁反应放大。
