positive ray 阳射线
x ray positive detectable rates x线阳性检出率
positive ray parabolas [物] 正射线抛物径迹
positive-ray method 阳离子射线法
positive ray detail 正电荷离子射线
positive-ray current 阳射线电流
positive-ray parabolas 正射线抛物径迹
positive x-ray photoresist 正性x射线光刻胶
X-ray positive rate is significantly higher than the positive rate of signs.
线阳性率明显高于体征阳性率。
She was scouring for signs of something positive, anything that would offer a ray of hope or light for her situation.
她在搜寻一些正面的信息，任何能使她的处境变回希望和光明的东西。
Dr Hess envisages a ray of light travelling down an optical fibre made from two materials: a core with a negative refractive index and an outer sheath with a positive one.
赫斯博士构想出一个画面，即一道光正穿越于一个由两种材料制作的光导纤维，一种是具有正折射指数的纤维核，另一种则是具有正折射指数的外围。
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