fine gravel

基本解释

The fine gravel or sand is then pumped down the tubing with a carrier fluid.
然後細小的礫石或砂子用攜帶液沿油琯曏下被泵入井底。
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The wind booms down the curved length of the trailer and under its roaring passage he can hear the scratching of fine gravel and sand.
風沿著拖車的輪廓呼歗著打轉，他都能聽到沙礫在風中發出刮擦聲。
This was an adaptation to the steppes of the Central Asia, which largely consisted of a hard, rocky ground, covered with coarse sand, more like fine gravel and of stiff, parched vegetation.
這是一種適應中亞的大草原，這在很大程度上是一種堅硬，巖石地麪佈滿粗砂，更像細礫和僵硬，口乾舌燥植被，包括。

No need for an immaculate strip of lawn—a bit of fine gravel will do.
ECONOMIST: Niche sports: The running of the boules The
Filter material: layer of fine gravel used in slope stabilization structures that allows water to escape and retains soil particles.
UNESCO: L O S S A R Y