英汉例句双语例句The essential oils extracted from Baccaurea ramiflora Lour and its chemical constituents were analyzed by GC-MS.采用水蒸汽蒸馏法从大戟科木奶果中提取挥发油，用气相色谱-质谱对挥发油的化学成分进行了分析。词组短语短语Baccaurea ramiflora Lour 木奶果