您要查找的是不是：
- stratified excavation 开挖分层
- Excavation of the site will begin tomorrow. 明天开始挖掘工作。
- The excavation of the buried city took a long time. 发掘埋在地下的城市花了很长时间。
- The excavation of the bur city take a long time. 发掘埋在地下的城市花了很长时间。
- This would be an example of a stratified sample. 这就是一个典型抽样的例子。
- Feudal society was rigidly stratified. 封建社会等级森严。
- Methods Stratified chester random sampling. 方法采用分层整群随机抽样的调查方法。
- The bad weather has hung up the work of excavation. 天气不好耽误了挖掘工作。
- Thickly cornified stratified squamous epithelium. 掌皮（厚的角化复层扁平上皮）。
- The excavation exposed some ancient ruins. 这次挖掘暴露出一些古遗迹。
- Stratified structures led by chieftains. 有首领的分级形式；
- An excavation site, as for digging ore. 矿区矿区，如挖矿的采掘地
- The scientists fixed the date of an excavation. 科学家确定出土文物的时期。
- Excavation for fuel oil pump house is in progress. 燃油泵房开挖工作正在进行。
- An excavation for the interment of a corpse. 坟墓用于埋葬尸体的地穴
- An excavation site,as for digging ore. 矿区矿区，如挖矿的采掘地
- Excavation and embankment of earth. 土木工程土地的挖掘和筑根
- The excavation exposed some ancient ruins . 这次挖掘暴露出一些古遗迹。
- Only dielectric stratified media will be treated in this section. 这一节将只讨论介质分层媒质。
- The excavation of the lost city took a long time. （消失的城市花了很多时间才被挖掘出来）。
