Correct pressure control, adequate manual massage as well as comprehensive assessment of patient's condition can improve the success rate of air enema reduction of intussusception.
A high flow rate and pressureof hydrogen was in favor of the catalytic reduction of nitrate, but not benefit for the selectivity.
而对于选择性，前者提高，后者则会导致降低，即控制反应扩散性能有利于提高催化选择性。
3
The flow characteristic, pressurereduction, air-contained rate for the reactor which assembled many kinds of air distribution are studied, the best air distribution is chosen.