isomers等: class; grade; rank比值: specific value; ratio线: thread; string; wire担孢子长宽比值线: basidiograph等同位素比值线: isorat下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:等比值线,即可在微信中查询翻译