报道一种快速检测冰箱除臭器对乙硫醇驱除效率的气相色谱分析方法. A gas chromatographic method to quickly test the efficiency of refrigerator deodorizer in eliminating ethanethiol paper.
It is incumbent upon all of us to make an extra effort.我们所有人都必须加倍努力。He defeated the incumbent governor by a large plurality.他以压倒多数票击败了现任州长.It is incumbent upon us to do so.这样做是我们义不容辞的责任。Dislodging an incumbent currency c...