lower beds中文什么意思

• 下伏岩层

• lower:    vi.,n. ＝lour.
• bed:    n. 1.床，床铺；床位，铺；(动物的)窝；〔比喻〕安乐 ...
• beds:    密蜡蜡
• alternating beds:    互层
• alternation of beds:    交互层; 料层交替; 岩层交互变化

例句与用法

1. I was lying upon a low bed covered with fine snow-white sheets .
   我躺在一张矮床上，身上盖了一条精制的雪白的被单。
2. Raise side rails and lower bed
   放置围栏，降低床铺高度。
3. Discovery of fossil dinosaurs in the basal and lower beds of yixian formation , western liaoning province , china
   义县组底部层位发现恐龙化石
4. This is an idea we are trying to implement to make heavy crawler cranes self mobile without need of putting it on a low bed trailer
   我们的想法是使重型履带式起重机能够自行在公路上行走，而不需要将它们放置在平板拖车上。