reverse grading是什么意思

网络释义

用法例句

Geochemical characteristics of nitrogen in different grain size sediment from the southern Huanghai Sea;

南黄海表层不同粒级沉积物中氮的地球化学特征

By using mcirolysimeter,a laboratory simulation experiment was conducted to study the effects of the grain size and thickness of dust deposits on the soil water evaporation and salt movement in the hinterland of the Taklimakan Desert.

利用微型蒸渗仪(MLS)对不同粒级和不同厚度大气降尘沉积条件下塔克拉玛干沙漠腹地土壤水分蒸发和盐分运移进行了模拟试验。

On the basis of the results of porosity measuring experiment and column leaching experiment,the relation between porosity and size fraction has been studied.

通过孔隙率测定实验和柱浸实验,探讨了孔隙率与矿堆内部各粒级之间的内在联系,分析了浸出过程中孔隙率变化的机理,提出了改善孔隙率的新方法。

This paper dealing with the magnetic susceptibility distribution of particle fractions from three red earthes and three corresponding submerged paddy soils.

红壤经水耕熟化作用后各粒级磁化率大幅度下降，粒级间磁化率差异变小，分布曲线趋于平缓。

medium grained asphalt concrete

中粒级配地沥青混凝土

The Study on Control Technology of Fsss and Size Distribution of APT

仲钨酸铵费氏粒度及粒级分布控制工艺研究

(2) the grades are composed of silt(74.21%) and clay(25.79%);

②粒级构成为:粉砂74.21%,黏土25.79%;

②the composition of grade are sand 44.75%,silt 31% and clay soil 24.25%;

②粒级构成:砂44.75%,粉砂31%,黏土24.25%;

(2) The composition of grade is as follows: sand 44.75%, silt 31%, and clay soil 24.25%.

(2)粒级构成为：砂44.75％，粉砂31％，黏土24.25％；

micro-size particles

微米级粒子，超细粒子

Classification standard for size fractions of coal

GB/T189-1997煤炭粒度分级

Pearson air elutriator

皮尔逊空气颗粒分级器

particle size curve

颗粒组成曲线，粒度级配曲线

Control of Dispersion and Granularity of Micron-sodium Chloride Particles

微米级NaCl微粒的粒度与分散性控制

Percentage of Particulate Concentration Grades in Urban Air in 341 Cities

341个城市空气中颗粒物浓度分级比例

particle size fraction definitions for health related sampling

保健抽样用粒度级分定义

Study on Layer Silicate Nanoparticles to Reduce the Retention of Lead in Finishing Pigs;

纳米级硅酸盐微粒吸附饲料铅的研究

Energy of the Charged Particle in the Magnetic Field in Non-commutative Space;

磁场中带电粒子在非对易空间的能级

Development of 500MPa Φ6-12mm Ultra-Fine Grain Carbon Steel Bar

500MPa级6-12mm超细晶粒碳素钢筋开发

Study of critical gradient of piping for various grain sizes in sandy gravels

砂砾土各级颗粒的管涌临界坡降研究

Dynamic hierarchical hybrid particle swarm optimization algorithm

一种动态分级的混合粒子群优化算法

Low-Temperature Toughness for Weld Joint of 400 MPa Ultrafine Grained Steel Strip

400MPa级超细晶粒钢焊接接头的低温韧性