sand burial depth 沙埋深度
sand burial 沙埋
tubing sand burial 油管砂埋
Giant Sand Burial 沙暴送葬
depth of sand burial 沙埋深度
It resembles a statue of marble which stands in the desert and is continuously threatened with burial by the shifting-sand.
它就像树立在沙漠里的一座大理石雕像，随时承受着被流沙埋藏的威胁。
Sand burial is one of the main factors that affect seedling survival in sand land.
在沙地环境中，沙埋是影响植物幼苗存活的一个重要因素。
In accordance with downhole tubing sticking by sand burial accident, this paper proposes hollow rod sand washing after analysis of downhole string structure and hydraulic calculation of sand grain.
针对处理井下油管砂埋遇卡事故作业中出现的技术问题，在分析井下管柱结构及砂粒的水力计算的基础上，提出了空心抽油杆冲砂工艺处理措施。
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