D50

Weldability of friction welding between copper and high carbon alloy steel ( D50 or D60 ) is studied with radial friction welding procedure .

介绍了应用径向摩擦焊进行紫铜与高碳合金钢（D50或D60）摩擦焊焊接性试验的情况。

Including the field measured reflectance and the median diameter ( D50 ) of sediments , a quantitative remote sensing model for the prediction of SSC is established .

同时，又利用野外现场实测的光谱反射率和悬浮泥沙中值粒径，建立受粒径影响的悬浮泥沙浓度反演模型。

This is important to know as most spectrodensitometers are defaulted to D50 or D65 illuminants .

因多数分光密度仪的光源默认设置为D50或D65，这点极为重要。

This research selects DA as grinding aids to study the effects of DA on the grinding size ( d50 、 d97 ) of SiO2 powder under the fitting conditions . And its optimum amount has been determined .

在适宜的搅拌磨操作条件下，添加DA分散剂进行超细SiO2粉的粉磨试验，通过产品粒度（d50、d97）考察了助磨剂对粉磨过程的影响，并确定了DA分散剂的最佳用量。

The result of the study shows : ( 1 ) The viscosity and size distribution ( D50 ) of the extracted liquid assumes a near linear relationship with variables involved and the content of pectin exerts great influence on viscosity and size distribution ( D50 );

结果发现本实验体系：（1）中药水提液的粘度、粒径分布（D50）分别与有关变量呈近线性关系，且果胶含量对粘度、粒径分布（D50）的影响较大；