critical layer meaning in Chinese
临界层
重要层
Examples
- This critical layer surrounds a solid inner core of nearly pure iron that underlies 2 , 900 kilometers of solid rock that form the massive mantle and the ultrathin crust of continents and ocean floors
这关键性的外核包覆著几乎是由纯铁所组成的固态内核，深埋在厚重的地函与极薄的大陆、海洋地壳之下，距离地表的深度约2900公里。 - This model not only can calculate the critical pressure , critical crossflow velocity of critical point and critical layer thickness , but also can predict the relationship between the nature of the critical point and different kinds of operation parameters
用该模型不仅能计算错流微滤过程中临界点的临界压力、临界错流速度和临界滤饼层厚度，还可以对临界点的性质与微滤中各项参数的关系进行预测。 - A normal transform is introduced , and there are enough much grids in the region between the critical layer and the wall , where the variation of the disturbance is the quickest . the finite - difference of governing equations with fourth - order accuracy in the normal direction is utilized in full regions including points close the wall , and is very important for accurately discreting equations . the combination of global and local methods is implemented , and a new iterative formula is derived
对于曲线坐标系下的抛物化稳定性方程,文中发展了求解的高效数值方法:引进法向变换,使得在临界层与壁面之间的扰动量变化最快的区域有更多的法向网格点;导出包含边界邻域在内的完全四阶精度的法向有限差分格式,这对方程精确离散至关重要;采用全局法和局部法相结合的方法及其新的迭代公式,大大加速收敛并得到更精确的特征值。 - Around 40 ; the neutral curve obtained by the growth rates of the temperature fluctuation has a ringlike curve separated from the main branch of nachtsheim s calculation by velocity fluctuation at the lower grashof number side ; and its phase velocity is close to the maximum mean velocity where the critical layer of the eigenmode locates . the thermal fluctuation decays rapidly as the nondimensional frequency above 0 . 4 , so that it means that the coupling effect between instability wave generated by buoyancy fluctuation and velocity waves by invicid instability seems weak enough for their critical layers in the range of the nondimensional frequency
详细研究了自然对流边界层中最早失稳的浮力振型的功率谱波长波速与临界层位置等基本特征和它为主导其他振型尚未失稳时按线性理论得到的3种相互独立振型的振幅分布。系统地测量了它所对应的温度和速度涨落的振幅增长规律和中性曲线，实验结果表明，温度涨落的中性曲线在低格拉斯霍夫grashof数