ratiotestn.比率检验法ration.比率；比例ratio of carrier-to-thermal-noise power载波热噪声功率比ratio of jamming-to-signal time-resident干信驻留时间比ratio spectro - derivative spectrophotometry比值导数光谱法ratio of signal to interference-plus-noise信号与干扰加噪声比ratio of indoor/outdoor BTEX concentrations室内外BTEX浓度比ratio of crosslinked to noncrosslinked-fibrin交联和非交联纤维蛋白(原)之比ratio of wanted-to-interfering signal powers有用信号与干扰信号功率比ratio of accommodation convergence to accommodation调节性集合/调节比率ratio of peak systolic pressure to end-systolic volume最高收缩压与收缩末期容量比值ratio of walking ventilation to maximum breathing capacity步行换气量与最大呼吸量之比