sand-clay surface 中文意思是什麼
sand-clay surface
解釋
砂泥路面-
The quality of furan sand castings is usually better than clay sand castings, however, some defects are also very easy take place with furan sand castings such as blow hole, metal penetration, veining, cracking, slag inclusion, hardness too low, surface recarburation, surface sulphuration, nodularity degeneration etc, which were usually caused by improper raw materials selection, improper method design, incorrect moulding or / and core - making
摘要呋喃樹脂砂鑄件質量一般比黏土砂鑄件好，但如果原材料選擇、工藝設計、造型和制芯操作不當，也會產生氣孔、粘砂、脈紋、裂紋，夾渣、硬度不足、滲碳、滲硫和球化不良等鑄造缺陷。 -
On the basis of theory analysis, the average transmitted light intensity ( correspond to dc value ) was determined as characteristic parameter of raw water using photoelectric method for monitoring the fluctuation of transmitted light and photometric dispersion analyzer ( pda ). the dc value was closely related to both particle concentration and surface area of sand clay simultaneously. the experimental results shows that there is an exponential function relation between dc and surface area of sand clay in unit volume water ( sp ) : dc = asbp in which a and b are empirical coefficients. then the formula of macromolecule flocculant dosage is found to be d = f ( dc ) = e ( dc ) f in which e and / are empirical coefficients and the average correlation coefficient equal to 0. 981. so the model of automatical control system of water treatment plant was established using the formula
應用透光率脈動檢測技術和光散射顆粒粒度分析儀（ pda ） ，通過理論分析，將pda的輸出信號之一? ?平均透光強度（對應于dc值）作為原水的特性表徵參數， dc值可以同時反映顆粒濃度和比表面積因素的影響，試驗結果證明， dc值與單位體積水中泥沙顆粒總表面積s _ p之間具有很好的冪函數關系： dc = cs _ p ~ d ，式中c 、 d為經驗系數，進而得到了以dc值為參數的高分子絮凝劑投藥量公式： d = f （ dc ） = e （ dc ） ~ f ，式中： e 、 f為經驗系數，平均相關系數達0 . 981 ，利用所建立的公式，建立了前饋? ?后饋聯合控制的在線自動投藥模型。 -
Study indicated that establishing salix psammophila checkerboard can effectively keep the earths surface from coarsening, because salix psammophila checkerboard can obviously increase the fine sand and clay sand of soil surface, accounting for 15. 1 %, 18. 3 %, powder sand increased by 1. 8 times
結果表明：設置沙柳沙障的沙丘表層細沙含量比對照樣地提高15 . 1 % 、粘粒提高18 . 3 % 、粉沙含量是對照地的1 . 8倍，說明設置沙柳沙障能夠增加沙丘表層細顆粒含量，有效控制地表粗化。 -
A trowel - shaped tool for smoothing the surface of clay, sand, or plaster in a mold
（瓦工的）鏝用以刮光模子中泥土、沙粒或灰泥的表面的鏟型工具 -
Secondly, essential law of soil crust formation was obtained : when coarse sand exceeded 50 %, soil crust dominated by depositional crust would be formed. when soil clay exceeded 30 % and soil aggregated degree was less than 140 %, soil surface tended to form soil crust dominated by structural crust
四、土壤聚合劑聚丙烯酰胺（ pam ）對控製表土結皮形成的效果： pam能控製表土結皮形成的主要原因是， pam能改善土壤的結構狀況，顯著提高土壤團聚體的穩定性，從而有效的抑制了表土結皮的形成。 -
The obtained results indicate that compared with the clay layer, the liquefied sand layer takes a decreasing effects on the short period component of the surface ground motion and the effects increase with increasing of the thickness 、 depth and width of the liquefied sand layer ; the liquefied sand layer takes a increasing effects on the long period component of the surface ground motion but the effect is not obviously ; to the input earthquake wave, the demarcation point of strengthens and weaken is about 0. 6s
主要結論為:和同樣的粘土層相比，液化層的存在對地表上地震動的短周期分量主要起減弱作用，且減震效果隨著液化層埋深、厚度的增加而變強;對長周期分量主要起加強作用，但是效果不太明顯;對所輸入的地震波來說加強減弱的分界點所對應周期為0 . 6s左右。 -
People often use the process of clay sand to produce varieties of casting which are required standard figure, precise dimensions, smooth surface and high productivity in some industry for example vehicle, tractor, internal combustion engine
在汽車、拖拉機、內燃機等行業中凡是對外形規范化、尺寸精度、表面光潔度要求高的生產量大的各類鑄件，採用粘土砂的生產工藝是目前國內外公認的主要手段之一。
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