论文部分内容阅读
步骤:1.取湿砂(不计重量)放入量筒中,高度约为量筒刻度的2/3; 2.加水于筒中,使水充满砂的全部孔隙,并高出砂面2～3厘米(为求得较精确,充水后可先将砂煮10～15分钟); 3.记下筒内水面刻度(c.c.)B; 4.将筒内砂与水全部倒入磁盘内并称其总重g_1; 5.然后烘干,称其重量为g_2; 6.求出水重量V_g=g_1-g_2; 7.求干砂重g=g_2-磁盘重;
Steps: 1. Take the wet sand (excluding weight) into the measuring cylinder, the height is about 2/3 of the graduated cylinder; 2. Add water to the cylinder to fill the water with all the pores of the sand and 2 to 3 cm above the sand In order to get more accurate, after the water can be boiled for 10 to 15 minutes); 3. Note down the surface of the cylinder scale (cc) B; 4. The tube of sand and water all poured into the disk and said the total Weight g_1; 5. Then drying, weighing it as g_2; 6. Find the water weight V_g = g_1-g_2;