- alternating stress cycle交变应力周期;
- allowable stress design容许应力计算;
- bottom view底视图，仰视图;
- bottom up颠倒，<俗>干杯！;
- bottom reinforcement bars底部钢筋;
- bottom rail下冒头;
- bottom pipe distribution下分式管分配;
- bottom out降至最低点;停泻回升;
- bottom line concept底线概念;
- bottom linen.概要，账本底线;
- bottom layer of the reinforcing steel底层钢筋;
- bottom intake底取水口;
- bottom gate底部闸门;底浇口;底孔闸门;底注式浇口;
- bottom flange底缘;
- bottom fell out底部掉了出来
- bottom discharge opening底部卸料孔;
- bottom cover底盖，后盖;
- bottom color[化] 底色;
- bottom block（盛钢桶）桶[包]底大块砖;
- bottom linesn.概要，账本底线( bottom line的名词复数 );
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