如题所述
mettled è±['metld] ç¾['metəld]
adj. ç²¾ç¥é¥±æ»¡çï¼åæ¢ç;
[ä¾å¥]It described the suscessing test with pillar mettled which have applied manual pillar at gentel dip thick orebody in Heging Manganese Mine.
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adj. ç²¾ç¥é¥±æ»¡çï¼åæ¢ç;
[ä¾å¥]It described the suscessing test with pillar mettled which have applied manual pillar at gentel dip thick orebody in Heging Manganese Mine.
ä»ç»äºå¨é¹¤åºå¿é°ç¿ç¼å¾æåç¿ä½ä¸ï¼è¯éªæåç人工æ±éææ¿æ±éç¿æ³ã
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