combining form正确的;标准的;
例句:
Alkyl is an usual ortho-para directing group.
烷基通常是邻对位定位基.
Phosphoric acid produced by the wet process is in the ortho form.
用湿法生产的磷酸呈正磷酸状态.
We describe here the synthesis and characterization of high ortho-positionphenol-formaldehyde resin ether.
报道了高邻位酚醛树脂酸的合成和表征.