其中一种不用高精度的化学方法验证物质的办法就是确定它的密度。
One way of identifying a substance without resorting to fiddly chemical methods is to determine its density.
现有的密度补偿模型不适合高温高压饱和蒸汽的流量测量，密度补偿精度较低，导致蒸汽流量测量误差较大。
The existing density compensator model does not fit high temperature and pressure saturated vapor, the density compensator precision is low and causes big error in saturated vapor measurement.
讨论了网格密度、计算精度以及CPU时间的关系以及八节点四边形单元在复杂求解域的适应性。
The relationship of the gridding density, CPU time and account precision and applicability of eight node's quadrangle element in complicated zone was discussed.
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