The adding amount range of rare earths is narrow and different with different steels.

但稀土加入量的合适范围很窄，并且视钢的成份不同而不同。

youdao

This paper showed the results of experimental study on the effects of different types and adding amount of alkali on the loss rate of water and the drying shrinkage of cement paste.

通过测量不同品种和掺量的碱对水泥基材料的水分损失量和自由收缩率，研究了在干燥条件下不同的碱对水泥基材料收缩性能的影响规律。

youdao

Waste rubber powder is modified by different modifiers, then fiber reinforced rubberized mortar with a certain function is developed by adding different amount of waste rubber power and fiber.

将废橡胶粉以不同的改性剂进行表面改性，以不同取代量掺入水泥砂浆，并采用纤维增强，制备了具有一定功能性的纤维增强废橡胶粉水泥砂浆。

youdao