在百泉山上的岩石里,有兵蚁出没.There are soldier ants in the cave of the Spring mountain.本文主要讨论采用不同提取方法所得家白蚁兵蚁的外分泌化合物的组成及相对含量的变化.To investigate the exocrine compounds of coptotermes formosanus dinergate exocrine concentrate was obtaine...
提出一种新的催化裂化主分馏塔建模方法.A new method establishing models of FCC main fractionator was proposed.这是一座分馏塔.This is a fractionating tower.研究分析了催化裂化装置的主分馏塔与稳定塔之间操作控制的关联性.The operation and control interaction analysis between main f...