Somewhere the depth of turf bed could be measured to 10 meters; the deepest places of this glacier lake remained filled with water while highlands grew into small islands with tight and strong soil.
有些的沼泽的深度可以达到10米，这个冰川湖最深的地方仍然充满了水，而有坚实泥土的高地则变成小岛。
Open constructions, which offer little resistance to soil penetration, may require more maintenance than tight constructions, which shed dirt.
稀疏的织物结构几乎对灰尘没有阻挡作用，在维护方面要比紧密织物结构复杂得多。
We adjusted the working speed, added the device to make soil tight and pad. And we also improved some parts which influence the working quality of the seeding machine.
对其工作速度进行了调整，增加了土面压实装置和垫盘等装置，同时对机器在工作中出现的影响到工作质量的工作部件进行了相应的改进。
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