... free-surface ship flow 水面船舶流场 收藏 reverse flow divider valve 逆流分流管阀 收藏 Permeability rate 透水率; 渗透率 收藏 ...
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moisture permeability rate 透湿度
sand particles permeability rate 砂粒透筛率
the changing rate of permeability 磁导率斜率
permeability loss rate 渗透率下降
permeability damage rate 渗透率损害率
permeability recovery rate 渗透率恢复值
The permeability of surface layer of farmland is stronger, along with the increase of depth, permeability rate reduces rapidly ranged from 20 to 40cm, but below 40cm it gradually increased. This tendency is different from that of undisturbed black soil.
耕地的表层土壤渗透能力较强,随着深度的增加,在20～40cm渗透速率急剧减小,而在40cm以下渗透速率又逐渐增大,与未经干扰黑土呈现出不同的渗透变化规律。
参考来源 - 典型黑土水分入渗特征的研究The re-grouting depth is studied to be 13.4m, after all the curtain re-grouting is finished, hydraulic test on 13 holes total 58 stretches are made, it is tested that all the water permeability rate≤3Lu, meet the requirements of design.
本研究取得的复灌深度为13.4m,在帷幕复灌全部结束之后,进行了13个检查孔共58段的压水试验,测得透水率,全部满足透水率≤3Lu的设计要求,其合格率为100%。
参考来源 - 大坝心墙基础先帷幕灌浆再爆破开挖施工方法的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The testing research about enhancing permeability rate by hydraulic cutting seam on outsize coal sample is introduced.
介绍了特大煤样采用水力割缝提高瓦斯渗透率的实验研究。
Compared with the test production, the paper obtains the variation law of rock permeability rate and P-Q curve during the high-pressure water.
本文通过对试验成果的比较，得出了高压压水过程中岩体透水率值和P ~ Q曲线的变化规律。
The flow behind groynes to the floodplains is mainly related to the permeability rate and deposition status of the floodplain behind groynes. The amount of wate…
坝后过流上滩的水势主要与透水率及坝后滩地落淤状况有关 ，上滩水量也主要取决于透水率的大小。
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