At higher temperatures the equation of state becomes better and better approximated by the "perfect gas" law . 在更高的温度区内，状态方程越来越接近于“理想气体”定律。
Although the approximate wave function is qualitatively useful, it is gravely lacking in quantitative accuracy . 虽然近似的波函数是定性地有用，然而它严重的缺少定量的准确性。
The behaviour of some materials, notably structural steel, can often be approximated by a stres-strain curve . 某些材料的受力状态，比如值得注意的钢结构，通常可以近似地用应力--应变曲线来描述。
Also, the difference in pressure between any two points in a bed is roughly approximated by the static head of bed between these points . 还有，床层中任意两点间的压差大致等于这两点间床层静压头。
We can approximate the growth in total welfare of society as the simple weighted sum of the growth of income in each class . 把每个阶层的收入增长化为简单权数，我们可以估算出整个社会总福利的增长。
The ultimate goal of a simulation is to approximate chamber pressure so as to detect and define the source of undesired pressure variation . 模拟的主要目标是在接近室压下探测和确定不希望有的压力变化的来源。
Generally, one approximates a blackbody in the laboratory by a hollow insulated enclosure which contains a small hole in the wall . 一般地说，人们在实验室中用壁上带有一个小孔的空心绝缘壳来近似模拟一个黑体。
The striking fact about heron's work is his commingling of rigorous mathematics and the approximate procedures and formulas of the egyptians . Heron的工作突出之点是他把严密的数学同埃及人的近似方法和公式融合在一起。
After close observation for premonitory indications, the danger area is narrowed down, and the approximate scale and time of occurrence determined . 在对预兆进行细心观察之后就把危险区缩小，并确定出地震发生的大概震级和时间。
For design calculations, it is usually adequate to use the theoretical value for the approximate mixture ratio, corrected by a typical combustion efficiency factor . 对于设计计算，采用相应混合比的理论值，并用典型的燃烧效率系数来修正，通常这样做是恰当的。
