subbase

基本解释

While holding down on the cone, tighten the subbase screws.
用手壓住漏鬭，擰緊座墊固定螺絲。
So the void ratio method is feasible in compaction control of subbase.
因此，路基壓實用空隙率法控制是切實可行的。
Silt and clay is the main fillings of high-qulity subbase in our country.
粉性土、粘性土爲我國高等級公路路基的主要填料。
Research the relationship between dry density,inner friction angle and cohesion of low liquid limit silt subbase.
研究低液限粉性土路基的乾密度與內摩擦角、粘聚力的關系；
It is a common phenomenon that lime-fly-ash stabilized-aggregates acts as the base and subbase of highways.
摘要二灰碎石作爲各類公路的基層和底基層已是普遍現象。