bottom on建立在
bottomn.底部;底端adj.底部的v.触底;打(基础)
bottom breezing system下送风
bottom flushing outlet冲砂底孔
bottom lateral bracing底斜支撑
bottom ash and fly ash焚烧灰渣
bottom slide of saddle刀架底板
bottom-emptying skip底卸式箕斗
bottom die of sand core砂芯下模体
bottom diversion outlet导流底孔
bottom line of morality道德底线
bottom-line issues.盈亏结算报告