In the geotechnical engineering design, it was difficult yet to estimate the settlement of pile - group in the deep soft soil.
深厚软土地基中群桩沉降的预测一直是工程设计中的难点。
If the area is on high ground, the soil is soft enough for them to dig deep enough to avoid freezing, and is an area that stays damp, then a healthy turtle can be hibernated outside.
如果冬眠地区在高原，土壤足够松软，使龟可以向地下挖深以避免被冻僵，冬眠地同时可以保存一定的湿气，那一只健康的龟就能在室外冬眠。
Deep mixing method for soft soil is ineffective while humus content is above a certain value, thus additives should be mixed into cemented soil to eliminate the influence.
深层搅拌法在加固含有腐殖酸的软土时失去了效用，需要添加促进剂来消除腐殖酸的影响。
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