dry sand

基本解释

The present paper summarized the experience on the study of dry-sand EPC process.
总结了干砂消失模铸造技术研制的经验；
The requests for dry-sand, vibrating table, structure of negative pressure sanrl box and proceedings to be noticed in casting pro-cesss have been put forward definitely.
结合工厂多年的生产经验，对于砂性能、振实台和负压砂箱的结构以及负压浇注过程中的注意事项提出了明确的要求。
The factors that remarkably affect the permeability of sand were the ratio of course area to pump area, granularity of the dry-sand and their interaction, and their affecting degree minished in order.
显著影响型砂渗透系数的因素是通流面积与抽气面积的比值，型砂粒度以及二者之间的交互作用，其影响程度依次减小。

This was quite easy, because the sand at the bottom of the hole was very soft and fine and dry, like sea-sand.
NPR: Excerpt: 'Five Children and It'