LECA lightweight grass paving block is useful for the grass or hydro seeding due to the grass can be alive in the slot and keep the soil slope stable.
陶粒植草砖可稳定斜坡泥土不会下滑，因砌块中空部份可使小草在内生长，起稳固作用。
There is a deep step on the slope of the novel camshaft of brakes or the lowest place of the slot.
一种新型制动器凸轮轴，凸轮轴的斜面或者凹槽的最低处有深台阶。
There is a deep step on the slope of the novel camshaft of brakes or the lowest place of the slot.
一种新型制动器凸轮轴，凸轮轴的斜面或者凹槽的最低处有深台阶。
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