金矿的主要载金矿物分别为:毒砂 、 磁黄铁矿 、 黄铁矿 、 方铅矿和闪锌矿.The main gold bearing minerals include arsenopyrite, pyrrhotine, pyrite, galena and sphalerite.与黄药相比,乙硫氮是方铅矿更好的选择性捕收剂.Diethyldithiocarbamate was more better selective collector than...
Should motherhood necessarily mean sacrifice and self-denial?做母亲就一定要牺牲和忘我吗？Joanna's denial rang true.乔安娜的否认听起来像是真的。...his categorical denial of the charges of sexual harassment...他对性骚扰指控的断然否认The clock of thought tic...
If you went into town, you'd notice all the pubs have loud jukeboxes.如果你进了城，你会注意到所有的酒吧都有音量很大的自动点唱机。Many diners had jukeboxes that people could operate from their tables.许多餐车都有自动唱片点唱机,人们可以在自己的桌了操作这种唱机....