opening upn.开发；开辟；开放openingn.开口；开始；张开；开幕；空缺adj.开头的动词open的现在分词.opening type fund开放式基金opening of wrench扳手开口opening of a film首映式opening the books开帐,开立帐簿opening parameter孔洞参数Opening operation开放手术opening education开放教育opening of market市场开放opening mechanism开放性opening of tuyere风口,吹风管嘴