“grass-roots mining”的概念、定义、翻译、参考文献-科学参考

单词	grass-roots mining
释义	grass-roots mining [`gras ´rüts `mīn·iŋ] ^{MINING ENGINEERING} 1. Also known as mining on a shoestring. 2. Inadequately financed mining operation, with catch-as- catch-can practices. 3. Mining from surface down to bedrock.
随便看	ammoniated mercuric chloride ammoniated mercury ammoniated superphosphate ammoniation ammonia valve ammonia water ammonification ammonifiers ammonioborite ammoniojarosite ammonite ammonium ammonium acetate ammonium alginate ammonium alum ammonium aluminum sulfate ammonium benzoate ammonium bicarbonate ammonium bichromate ammonium bifluoride ammonium bitartrate ammonium borate ammonium bromide ammonium carbamate ammonium carbonate

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