concentration on 托福

The effects of different concentrations of arsenic on spore germination and rhizoid and prothallium growth of Pteris vittata under aseptic condition were studied.

研究无菌条件下不同浓度砷对蜈蚣的孢子萌发、假根和原叶体生长发育的影响。

Potted plant experiment was used in studying the effect of 7% glyphosate aqueous solution at five concentrations on soil salinize and alkalize.

通过室内盆栽模拟实验,研究了5种浓度的7%甘膦水剂对土壤盐化和碱化的影响。

Objective To explore the therapeutic effect of ascites superfilter concentration and reinfusion method on hepatic cirrhosis patients with refractory ascites.

目的探讨腹水超滤浓缩腹腔回输治疗顽固性肝硬化腹水的效果。