红花籽油是一种优质食用植物油.Safflower seed oil is a kind of high quality edible plant oil.介绍了以尿素包合法纯化红花籽油中亚油酸的方法.The separation and purification of linoleic acid from safflower oil via urea adduction fractionation was studied....
低音部八度和音只能由男声来唱.The bass octave can only be sung by a male voice.当低音部加入合唱曲目的时候,音乐变成了四个声部.The music becomes four - part , when the pedal adds the chorale melody....