greensand

1. A green mineral consisting of hydrated silicate of potassium or iron or magnesium or aluminum; found in greensand.
   一种绿色的矿物，由含水的钾、铁、镁或铝的硅酸盐矿物构成，见于绿砂中。
2. It is by simulated experiment proved that several greensand quality parameters including compressibility, available clay content, moisture, temperature, permeability and synthetical strength of greensand can be tested simultaneously in 20 second, which provides a good evidence to value the quality of green sand.
   经过模拟实验表明：此系统能够在20s内同时完成湿型砂的紧实率、有效粘土含量、含水量、砂温、透气性及综合强度等质量参数的快速检测，为评价湿型砂质量提供了依据。
3. Greensand Casting of Plank-like Parts of High-Manganese Steel
   高锰钢板状件的湿型铸造
4. Therefore it is necessary to research the mechanism of greensand used for high compacted molding methods thoroughly.
   所以很有必要对高紧实度造型用湿型粘土砂的回弹机理进行深入地研究。

noun

1. an olive-green sandstone containing glauconite