把磨刀石上的那把镰刀拿去.Take the sickle which is lying on the grindstone.Radianfullyconsistent最右边的一块是磨制石器的磨刀石.The right of a polished stone is the grindstone.古希腊人发明了冶铁术、风箱 、 磨刀石以及钥匙.The Greeks added welding iron , bellows, the lath...
Contact and repellency activities of ethanol extracts from twenty medicinal plants against Rhizopertha dominica ( Fab . ) ( Coleoptera: Bostrichidae )20种药用植物乙醇提取物对谷蠹的触杀和驱避活性 ( 英文 )...
可调节的挂链钩可方便地与各种货车紧密配合.The adjustable chain coupling can easily coperate with all kinds of lorries.有辊筒线 、 皮带线 、 网带线 、 悬挂链线 、 货架等系列产品.A line of roller, belt line, with net line, hoisting chain line, shelves and other produc...