Based on conservation of mass,this paper deduced a theoretical model for land subsidence caused by construction loading on unconsolidated strata,and compared it with the elastic model for subsidence controlled by groundwater pumping.
依据含水层质量守恒原理,推导了非固结地层在建筑荷载作用下的地面沉降机理模型,并将其与Jacob假定下抽水引起的地面沉降弹性模型相比较,结果发现两种模型的机理表达式完全一致,仅区别于水动力原因或实质的不同。
The principle of discrete mass conservation is proved and the convergence theorem is summed up.
对这类模型建立了迎风格式 ,给出了格式的解的存在唯一性 ,严格证明了离散质量守恒原理 ,并得到了收敛性定理 。
Reducing the quality fluctuation of PVC resin produced by calcium carbide method among each production batch;
缩小电石法PVC树脂批次间的质量波动
Study on Technology of Quality Control of Micron Wood Fiber Mould Product;
微米木纤维模压制品质量控制工艺方法研究
Effect of Carbonization Time on Blast Furnace Coke Quality;
结焦时间对冶金焦质量影响
Main quanlity defect and control on product of internal CSP plants;
国内CSP产品质量与控制
On relation between quantity and quanlity in economy growing;
关于经济增长数量与质量的关系
Quantity Prepared Control of Engineering Construction Item;
浅谈工程施工项目的质量预控
Some measure to increase external appearance quantity of T beam;
提高T梁外观质量的几点措施
Miscellaneous to Hand Over the Corn Seed Quantity Control Technique Application;
杂交玉米种子质量控制技术应用
Egg Image Detection Method and Weight Prediction Model;
鸡蛋图像检测方法与质量预测模型
The paper features the conclusionthat the reduction in size and weight of asytnmtrical gears is achieved by changing thepressure angle of the nonnative side.
针对齿形的结构，在相同模数条件下，提出了应力场偏差的计算公式，并计算出对称齿形齿轮与不对称齿形齿轮模数的变化量，从而得出通过改变非工作齿廊压力角实现减少不对称齿形齿轮的尺寸和质量的结论。
It can measure weight of continuous liquid automatically.
“液体自动称量控制仪”可任意设置要称的质量和控制点，能自动调整误差、实现动态显示，并能自动切换，可用于连续动态的生产流水线上液体的自动称