单词	sigma phi
释义	sigma phi 标准差（粒径）
随便看	adjustable disk adjustable dispersion slope compensation adjustable distance adjustable divider adjustable dog adjustable double vascular clamps adjustable drawbar adjustable drawing table adjustable drilling machine adjustable drive adjustable drum adjustable duration timer adjustable eccentric adjustable elbow adjustable electrode adjustable end cutting stripping plier adjustable end stop adjustable end stripping plier adjustable equalizer adjustable equatorial mount adjustable error adjustable extent adjustable eyepiece adjustable factor adjustable feet yxcy yxcz yxdf yxdj yxds yxeb yxed yxer yxfz yxgj 表亲表伯表伯叔表侄表侄女表侄女儿表侄孙表侄孙女表侄孙女儿表兄