With the growth of the content and molecular weight of polyethersulfone, its water flux is reducing, and the retention ratio of bovine serum albumin is increasing.
随着聚醚砜相对分子质量和含量增大，膜的水通量减少而对牛血清白蛋白的截留率提高。
The water purifying and mineralizing Chinese medicinal stone ball is made with Chinese medicinal stone grain and clay in the weight ratio of 80-90 to 10-20.
这种产品也是由麦饭石颗粒、粘土混合烧制而成的球块状物品， 其特点是：所说的麦饭石颗粒与粘土的重量比是80-90∶10-20。
Results showed that there were a big root-canopy ratio and dry weight when the lower limit of controlled soil water content decreased at the same irrigation treatment.
研究结果表明：在同一灌水方式中土壤含水率下限小的冬小麦根冠比大，且根系总的干重也大；
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