A.半圓管夾套B.蜂窩夾套C.型鋼夾套D.整體夾套
A.0.030%和0.020%B.0.02%和0.03%C.0.020%和0.030%D.0.03%和0.02%
A.受液盤B.降液管C.溢流堰D.液體分布器