brob钩头钉,弯头道钉broabbr.兄弟（= brother）bromelain菠萝酶,菠萝蛋白酶broussonin构树宁, 沙纸宁Bronnitski布龙尼茨基bromegrass雀麦草bromovinyl溴乙烯Brouillard布鲁亚尔Brochetain布罗舍坦bromazepam溴基安定bromstyroln.溴苯乙烯Broeckmann布勒克曼