The dewatered sludge was added with various additives to be landfilled, and the variation of heavy metal speciation in sludge during initial and final landfill stages was investigated.
采用不同添加剂与污水处理厂的脱水污泥进行混合填埋，考察了填埋初期和后期污泥中重金属形态的变化。
The final case also shows the necessity of comparing the two languages within the broad scope of variation of world languages.
最后一个问题还说明有必要将英汉两种语言置于世界语言变异的范围内来加以考察。
Accordingly it is very important to control and forecast the dimension change and the geometric shape variation of the final product in the powder metallurgy process, especially the design of mould.
因此，在粉末冶金工艺中，对尺寸变化尤其是对模具尺寸的设计进行控制与预测是非常重要的。
Accordingly it is very important to control and forecast the dimension change and the geometric shape variation of the final product in the powder metallurgy process, especially the design of mould.
因此，在粉末冶金工艺中，对尺寸变化尤其是对模具尺寸的设计进行控制与预测是非常重要的。
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