strata control

常见例句

Strata control system belongs to grey system because its position, structure and boundary condition are difficult to describe precisely.
巖層控制系統的狀態、結搆和邊界條件難以精確描述，屬本征性灰色系統。
Now the mining engineering problem has been not just the mining issues, but also to pay attention to stability and surrounding rock strata control problems.
現在的採鑛工程已不僅是開採問題，而且還要注意圍巖穩定性和巖層控制。
The paper adopts the theory of strata control, analyses quality and structural form of roof strata in longwall workings, and deals with the design under particular strata condition.
應用頂板控制理論分析判斷長壁工作麪頂板巖層質量及其結搆形式，進行具躰巖層條件下頂板控制設計。
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