The carbonate from calcium carbonate, if not remoyed by calcining may cause foaming in the reactors.碳酸钙中存在的碳酸根, 如果不经煅烧除去,会在反应槽中引起泡沫生成.Taixi anthracite with high quality calcining is also suitable raw material.宁夏太西煤只要控制好煅...
He is interested in mystic rites and ceremonies.他对神秘的仪式感兴趣.Among the Grecian and Latin tribes these rites held a conspicuous position.在希腊部落和拉丁部落中,这些宗教仪式占有突出的地位.Most traditional societies have transition rites at puberty....
毛蚊科九新种记述 ( 双翅目: 长角亚目 )NOTES ON NINE NEW SPECIES OF BIBIONIDAE ( DIPTERA: NEMATOCERA )湖北湖南的毛蚊五新种记述 ( 双翅目: 毛蚊科 )NOTES ON FIVE NEW SPECIES OF MARCH FLIES FROM HUBEI AND HUNAN ( Diptera; Bibionidae )...