spent material

We spent days going through all related reference material.

我们花了好多天功夫查阅所有有关的参考资料.

The preparation process of new packaging material with bagasse pith as raw material and spent pulping liquor as adhesive was studied.

研究了以蔗髓为原料，以酸法制浆废液为胶粘剂制备新型包装材料的工艺。

With the raw material of spent bleaching clay of oil refining, the regenerated technology was studied.

以油脂生产中的脱色废白土为原料, 制备再生白土.

With the increase of the thickness of the thermal insulation layer, the cost of heat loss decreases, however the cost spent on the thermal insulation material and building will expand. Study on thermal insulation material and structure of high temperature gathering system for heavy oil

随着保温厚度的增加，热损失费用减少，但保温材料及保温层施工费用等一次性投资增加。稠油高温集输系统保温材料及结构研究

Sulfuric acid leaching technology of a nickeliferous spent material was studied.

研究了含镍废料的酸浸工艺.

The watch I spent time with was a size 38-Apple will sell two sizes, 38 millimeters and 42 millimeters-with the leather strap made of the same thin, flat material used in Apple's leather iPad cases.

我试用的手表尺寸为38毫米——苹果公司将出售两种尺寸的手表，尺寸分别为38毫米和42毫米。皮质表带使用与苹果iPad皮套相同的、薄而平的材料制成。