求教关于重量比的一句话的翻译

In the case of effervescent tablets, effervescent granule  B and active-ingredient granule (A) are preferably used in a ratio of 1.7 to 2.9 parts by weight effervescent granule  B, particularly preferably 2.1 to 2.6 parts by weight effervescent granule   B per 1 part by weight active-ingredient granule (A).

by weight effervescent granule B per 1 part by weight active-ingredient granule (A)
特别是最末的这个修饰，实在是不知道怎么说才好

就泡腾片而言，泡腾颗粒(b)和活性成分颗粒(a)优选地使用比例为均以重量计每1份活性成分颗粒a对应1.7至2.9份的泡腾颗粒b，特别优选每1份活性成分颗粒a对应2.1-2.6份泡腾颗粒b。

不知这样翻可不可以