silt size

The structural characteristic and application results of NL-227 centrifugal mud machine and WL-230 continuous silt discharging centr. fugal-two types of centrifugal mud purification equipment are introduced in this paper. Grain size distribution of some substances separated wite purification equipments is discussed.

本文介绍了两种离心式泥浆净化设备&NL-227型离心除泥器和WL-230型连续除泥离心机的结构、特点和应用效果，讨论了几种净化设备的分离物的粒度分布。

These particles range from coarse silt to sand or pebble size.

这些颗粒的大小变化范围是从粗粉砂级到砂级或细砂级.

Through researching grain size characteristics of north part of the Tengger Desert, we get the results: ( 1) dunes sediment of north margin of the Tengger Desert donot include gravel, very coarse sand and silt.

研究腾格里沙漠北缘沙丘粒度特征得出：（1）腾格里沙漠北缘沙丘沉积物不含砾石、极粗砂和粉沙。

These may range from coarse silt to sand or peble size.

这些颗粒的大小变化范围,从粗粉砂级到砂级或细砂级.