a pigeon probably has his huff duff in that incrustation above his beak . 鸽子也有它的无线电高频测向仪,也许就是它喙上部的那个硬包吧。
jhb incrustation solid lubricate bush jhb镶嵌固体润滑轴承
and the thick incrustations 还有厚厚的壳
the watermeter has the same dimension with the traditional one for easy installation and can be changed directly . the electric valve will be more reliable for it will rotate to a position and rotate back in order to prevent incrustation after every 10m 该表对用户购水量有限制,当剩余水量和已购水量之和大于所设定的限制值时,水表将不读取用户卡中的水量
pigging in pipe before inspection, pipe pigging under low throughput intermittent operation; get rid of congealable oil, wax precipitation and incrustation in pipe to reduce backpressure and friction, and lower temperature 管线内检测前清管、低输量间歇运行输油管线清管;清除管线内部的凝油、结蜡、结垢,达到减小输油回压、减小磨阻、降低输油温度的目的。