John Krayeski of West Palm Beach told the Palm Beach Post he likes to leave the ocean floor tidier than he found it, so he picked up the card he saw in the sand. 西棕榈滩的约翰•柯耶斯基告诉棕榈滩邮报,他希望海底更加清洁,于是捡起沙中的卡片,发现是一张由彭尼公司(美国零售公司)发出的陈旧的卡片。
A New Roller Kiln to Produce Floor Tile with the Huanghe sand 利用黄河泥沙生产彩釉地砖的新型辊道窑
Without that stable floor on which to build, your life would rest on sand, making all you do rock to and fro. 没有这个稳定的基础,你的生活就像构建在沙子上。
In this article, the high-frequent echo characteristics in different grazing angle of rigid disk laying slantwise on flat sea floor composing by dirty sand have been studied. 研究了泥砂类沉积物构成的平坦海底界面上不同倾斜角度的刚性圆形平板某一面在不同入射掠射角的高频回声特性。
Sand lined metal mould casting is a new casting method that it covers with a floor of moulding-sand and come into being a molten shape in the metallic mould ( called ferric mould) interspace, whose main craft parameter is iron mould type and sand layer thickness. 铁型覆砂铸造是在金属型(称为铁型)内腔覆上一薄层型砂而形成铸型的一种新型铸造工艺,其主要工艺参数为铁型壁厚和覆砂层厚度。
The heat transfer model of underground structures involves the wall, floor, roof, foundation, footing, gravel sand and the soil layer. The influence of the water table line and thermal insulations on energy consumption of underground structures is taken into consideration. 4. 地下结构传热模型包括了墙壁、地板、屋顶、地基、基脚、砾砂层以及大地土壤层等,考虑了地下水位线和隔热保温对地下结构室内能耗的影响。