block caving坍: collapse; fall; tumble; crum ...落: fall; drop坍落: crumble; slump大块: block mass; bulk p-njunction; chunk; clod; clump; humch; volume坍落度: slump constant下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:大块坍落，即可在微信中查询翻译
