英汉词典

1.The phase transfer catalyzed Wittig reaction of allyl diphenyl phosphonium salt with substituted aromatic aldehydes using potassium carbonate as base provides 1, 3-dienes with good E-selectivity.

本文报道了二苯基烯丙基型鏻盐与取代芳醛在碳酸钾作用下的固一液相转移催化反应。

2.The phase transfer catalyzed Wittig reaction of allyl diphenyl phosphonium salt with substituted aromatic aldehydes using potassium carbonate as base provides 1, 3-dienes with good E-selectivity.

本文报道了二苯基烯丙基型鏻盐与取代芳醛在碳酸钾作用下的固一液相转移催化反应。

3.Under the same experiment conditions, the algae removal rate of Phosphonium salt modified montmorillonite is better than quaternary modified montmorillonite.

同等实验条件下，季磷盐改性蒙脱土的除藻效果比季铵盐改性蒙脱土的好；

4.The floatation tungsten concentrate is treated by acid pickling to remove phosphonium and carbonate, and its final concentrate is 70.

浮选钨精矿经过酸浸除磷、碳酸盐后，获得混合钨精矿品位为70。