p-xylol

基本解釋

The synthesis of p phthalaldehyde from p xylene by chlorination and catalytic oxidation was studied. The total yield was over 89%, the purity of the product was over 99%.
以對二甲苯為原料，經(jīng)氯化、催化氧化合成對苯二甲醛，收率大于89%25，質(zhì)量分數(shù)在99%25以上。該工藝提高了產(chǎn)品的收率和純度
I mind my p's and q's whenever I see him.
每當我見到他我都謹慎行事。
In English, b, p, m and w are bilabials.
英語中的b、p、m、w為雙唇音。
AB and CD intersect at (the point) P.
AB線和CD線在P點相交。
The time now is 10:00 p, m, sharp.
現(xiàn)在的時間是晚上10點整。