1.This method of cultivation produces higher yield.
这种法可提高产量。
2.The farmers turned the sterile land into high fields.
农民们把不毛之地变成了高产田。
3.The fields give high and stable yields regardless of climatic circumstances.
不管候条件如何, 这块地总是保持高产稳产。
4.Carbon tetrabromide was prepared from acetone and sodium hypobromite by adding tetrabutylammonium bromide.The yield and purity were very satisfactory.
向次酸钠溶液中滴加适量的丙酮,在四丁基化铵催化下,高产率得到四化碳。
5.The phenols were O-alkylated with 100% conversion and 100% selectivities using phenacyl bromide and benzyl bromide as alkylating reagents.
用代苯乙酮苄为烷基化试剂,以高产率100%的转化率以及100%的选择性得到了酚的O-烷基化产物。
6.Phenoxyacetophenone could be prepared from potassium phenolate and m bromoacetophenone via Ullmann reaction catalyzed by copper acetate in high yields.
间苯氧基苯乙酮可由酚钾与间苯乙酮在醋酸铜催化下以高产率合成。
7.Due to its low aroma and high acid, high production clones of pinot blanc are also used for blending with muscat in Spumante.
8.Unfortunately for its reputation, there are many other Italian Pinot Grigio makers that overcrop and harvest early to produce crisp, but vapid wines.
法可提高产量。
候条件如何, 这块地总是保持
酸钠溶液中滴加适量的丙酮,在四丁基
