[问答题,简答题] 弯针

组成挥发油的成分有（） ["单萜","倍半萜","二萜","芳香族化合物","脂肪族化合物"] 血肿 断针 晕针 pH值梯度萃取法适合于分离的成分有（） ["生物碱","游离羟基蒽醌","游离羟基黄酮","三萜类","香豆素"] 弯针