sand stratum的用法和樣例:
例句
- Quarternary sand stratum development, with surface run-off directly charging the underground water exists.
第四系砂層發育,地表水對地下水有直接補給關係。
- The resista nce decreases intensely when the slenderness ratio of the hot molding sand layer increases.
阻力隨干砂層長細比的增加而急劇減小。
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