manual sodium soil 人工钠土
sodium saline soil 苏打盐渍化土壤
sodium swelling soil 钠基膨润土
soil sodium 土壤钠
sodium bicarbonate soil 苏打盐渍土
high sodium salty soil 高钠盐渍土
The soil sodium forms and content of 36 samples were investigated in south centre area of Hebei.
对河北省中南部棉区36个地块土壤钠形态和含量进行了测定。
The fatigue life of cement-sodium-silicate-grouted soil is considerably affected by loading amplitude and frequency, but the effect of former is stronger than that of latter.
荷载振幅与荷载频率直接影响着水泥加固土的疲劳寿命，但荷载振幅比荷载频率对疲劳寿命的影响大得多。
Polystyrene sulfonic acid and its sodium salt were prepared with old froth as water treatment medicinal preparation and the soil modifier.
将废旧泡沫磺化制备聚苯乙烯磺酸及其钠盐，目标产品可以用来作为水处理剂和土壤改良剂。
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