silt gravel

The components to be considered in this book include boulders, gravel, sand, silt and clay.

本书所考虑的组成部分包括漂砾, 砾石, 砂, 粉土和粘土.

The inspection results indicated that the uniform diameter of pure sand-gravel columns in mud and silt reached 55~ 82 cm, and the boring core sample strength of grouting column reached 4.3~ 11.4 MPa at the age of 28 d.

检测结果表明，挤入淤泥和粉土中的纯砂砾柱平均直径达到55~82cm，28d龄期时水泥砂砾灌浆体取芯的抗压强度达到4.3~11.4MPa。

of mostly sand, with a small component of silt, gravel, and cobbles to small boulders.

大多数是沙子，用泥沙，砾石一小部分，小石块和鹅卵石。

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。