concentration on 托福

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

目探讨腹水超滤缩腹腔回输治疗顽固性肝硬化腹水效果。

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,了5种7%草甘膦水剂对土盐化和碱化影。

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

无菌条件下不同砷对蜈蚣草孢子萌发、假根和原叶体生长发育影。