There is a high content of unsaturated fatty acids in tung oil . 4 . There are some differences between the fatty aicds of the tung oil produced from different tung oil tree families .

说明桐油中 不 饱和脂肪酸含量高。4.不同 油桐品种所产桐油的脂肪酸含量存在一定的差异。