The preparing conditions of PDMAEMA composite NF membrane were investigated, using PSF flat membranes as support membranes.
研究了以聚砜(PSF)平板膜为基膜时，PD MAEMA复合纳滤膜的制备条件。
Initially both detector and lens are flat. Beneath both the membranes of the detector and the simple lens are Chambers filled with water.
最初检测器和透镜都是平的，在检测器薄膜和透镜单片下是装满水的舱室。
EARS: the membranes covering the inner ear should be either flat or slightly concave; ear abscesses are very common and can have fatal consequences if treatment is not obtained.
耳鼓：内耳孔上覆盖的耳鼓膜往往是平的或者微微凹陷；耳鼓鼓胀很常见，同时如果不经过及时治疗往往也很致命。
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