Malfunction of the metallic stent can be caused by encrustation of crystals, bacterial sludge, bile salts, and tumor compression or tumor ingrowth.
金属支架的功能障碍可以由胆管内的结晶凝块，细菌性污泥，胆盐，及肿瘤压迫或肿瘤直接侵入支架。
So using sludge and bacterial sludge can increase the microorganism number, raise microorganism activity and accelerate changeover of organic matter in the soil, thus increasing the fertility of soil.
施入底泥、菌泥均可增加土壤微生物数量，提高微生物活性，加快土壤有机成分转化，提高土壤肥力。
The characteristics of aniline-degrading bacterial community which acclimated from the activated sludge were investigated.
以苯胺为底物，对由活性污泥驯化得到的苯胺降解菌群的特性进行了考察。
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