半值厚度 half value thickness ; half value layer ; [物] half-thickness
加马半值厚度 half-thickness for gamma-ray
铅等值厚度 lead-equivalent thickness
贝他粒子半值厚度 half thickness for beta particle
厚度值 Thickncss ; THICKNESS VALUE
半值层厚度 HVT
十分之一厚度值 tenth thickness value
厚度等值线 Thickness Contours
第四系厚度等值线图 isopach map of Quaternary sediments
火山岩厚度等值线 Volcanic thickness contours
估算值一直在增长，直到研究人员可以判断冰层的厚度——总量似乎能达到数十亿吨水——以冰层夹杂着矿石的形式存在着。
Estimates kept growing, until researchers could determine how thick the ice sheets - and it looks like it could tally in the billions of tonnes of water - in ice sheets and bound up in minerals.
许多机器在理论上比在现实中更牛掰，但iPad的新体重和厚度带给我们的惊喜远远超过了理论值。
Many gadget specs are far more exciting in principle than reality, but the iPad's new weight and thickness matter more than the math might suggest.
但氩气等离子弧的电压较低，焓值不高，切割能力有限，与空气切割相比其切割的厚度大约会降低25%。
But the argon plasma arc voltage, low enthalpy is not high, cutting ability is limited, and cut the air than the thickness of the cut about 25% lower.
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