retention ratio

The optimum technological parameters were: gas/ water ratio 2 ∶ 1, hydraulic retention time 12 h, and optimum backflush interval is 5~ 6 days.

最优滤池运行参数为气水比2∶1，水力停留时间12h，反冲洗周期5-6d；

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Maximum water retention ratio and water-holding capacity of litter were 269.4%.

林地枯枝落叶层现存量平均为6.660t·hm-2，最大持水率为269.4%。

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The influence of the monomer concentration, reaction temperature, concentration of initiator and retention time on the grafted ratio was studied.

通过对聚丙烯进行官能化，并主要研究了反应单体浓度、反应温度、引发剂浓度和停留时间对接枝率的影响。

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Studies of the retention ratio of nutriment in geese during cramming periods

产肝鹅填肥期营养物质存留率研究

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The tubular external pressure ultrafiltration modules were used for concentrating bromelin. The performance of membrance is as follows: flux, 50L/ m2 · h; bromelin average retention ratio, 95%;

用外压管式超滤组件浓缩菠萝蛋白酶，通量为50L/m~2·h，酶截留率达95%，回收率达79.8%。

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New trend of development appears in the application: seeking for higher performance-price ratio retention aid product and system, increase in compositions in retention aid system, separate purchasing of retention system chemicals and shift of the addition points to the wire part.

应用方面出现新的发展趋势：追求性价比更高的助留剂产品及系统、助留剂系统组份增多、助留系统化学品分别采购、加入点向网部移动等。

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The effects of dietary supplementation with 7% levels flaxseed on growth, apparent retention ratio of nutrition, serum physiological indices, and lesion score of broiler chicks infected with Eimeria tenella

日粮中添加7%亚麻籽对感染E.tenella肉仔鸡生长、营养物质表观存留率及血清生理指标的影响

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