常見(jiàn)例句Keywords ethyl propiolate;palladium complex;cyclotrimerization;regioselectivity; 丙炔酸乙酯;鈀絡(luò)郃物;環(huán)三聚;區(qū)域選擇性;ethyl propiolate 丙炔酸乙酯 返回 propiolate