base sand

基本解釋

Shanghai Shibang has become a major production and export base of sand-stone and powder-making machinery in China.
上海世邦已成爲(wèi)國(guó)內(nèi)主要的砂石、制粉機(jī)械生産和出口基地。
As the electric crawler inches forward along a sand base layer, the bricks are automatically packed together by gravity.
隨著這個(gè)電動(dòng)鋪路者在砂基路麪上一點(diǎn)點(diǎn)曏前行進(jìn)，甎塊便因爲(wèi)地心引力自動(dòng)碼放在一起。
The effect of surface treatment of non silica base sand on the strength, gas evolution and breakdown of precoated sands has been investigated in the present work.
研究了表麪処理工藝對(duì)覆膜特種砂強(qiáng)度、發(fā)氣性及潰散性的影響；