used sand

基本解釋

This paper is concerned with the basic principle and features of a new-type used sand reclaiming outfit with spiral vibration.
闡述了新型螺旋振動舊砂再生成套裝置的基本原理和特點，介紹了成套裝置的組成、生產(chǎn)使用情況和良好的效果。
They learned to use the shadows cast by the sun. They marked the hours on candles, used sand in hour-glasses, and invented water-clocks.
可判斷出人們曾經(jīng)通過數(shù)自己的心跳、使用蠟燭、沙子和水和觀察太陽的陰影來計算時間，但沒有講使奴隸整日整夜地忙碌，所以選項。
According to the current study of used sand reclamation and its development, new viewpoints of selecting the methods and equipments of used sand reclamation are expounded.
根據(jù)舊砂再生研究和發(fā)展的現(xiàn)狀，闡述了選擇舊砂再生工藝方法及設(shè)備的新觀點。

But, lacking good construction materials, they used sand.
ECONOMIST: The Aral Sea
About 10, 000 gallons goes down a well--less than 1% of the 1 million gallons of water and 1 million pounds of sand used.
FORBES: Energy
Across the bay, fancy yachts and speed boats crowd the shores of the Ilha, a once almost deserted strip of sand used mainly by poor fishermen, on which smart restaurants and nightclubs for the new elite are now springing up.
ECONOMIST: The oil money may start to trickle down