The cornus officinal is more is fit for in growing on the stone medium light loam of gravel content.
在满足土壤肥力和地貌条件之外，山茱萸更适合于在石砾含量中等的轻壤土上生长。
Concrete with river gravel or quartzite aggregate is of medium difficulty to cut.
溪砂石骨料混凝土或石英岩身材中等难度降低。
PDC bits have been used to drill the homogeneous formation from soft to medium-hard, but they are not suitable for drilling in gravel and multi-interbedded formation.
PD C钻头用于软到中硬的均质地层钻进具有钻速高、寿命长等特点，但不适合含砾石地层和软硬交错地层。
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