Compared with metal and inorganic microporous filter media, the specific gravity of polymer microporous filter media is less than 1 or close to 1, and having light weight.
与金属类及无机类微孔过滤介质相比，高分子微孔过滤介质的比重小于1或接近1，重量轻。
In view of the measurements made by an onboard gravity sensor the Eotvos effect is introduced in the gravity measurement equation of a GPNS optimal filter.
考虑到运动载体上重力传感器的输出特性，在最优滤波器的重力观测方程中引入了厄特弗斯效应。
According to the principle of composite graded into seepage Wells pits multilayer filter material, water filtration by gravity flow top-down.
按渗井原理级配的复合多层滤料过滤，水按重力自上而下流动。
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