| 1. | Purification : density gradient centrifugation ( sucrose & cscl ) 分离:密度梯度离心法(蔗糖&氯化铯) |
| 2. | Test method for density of plastics by the density - gradient technique 密度梯度技术测定塑料密度的方法 |
| 3. | Charge carrier density gradient 电荷载流子密度梯度 |
| 4. | Density gradient centrifugation 密度梯度离心 |
| 5. | Gradient of continuous density 连续密度梯度 |
| 6. | Test method for identification of textile fibres . density gradient column method 纺织纤维鉴别试验方法密度梯度试验方法 |
| 7. | Standard test method for density of plastics by the density - gradient technique 用密度梯度法测定塑料密度的标准试验方法 |
| 8. | Plastics - methods for determining the density of non - cellular plastics - density gradient column method 塑料.非泡沫塑料的密度测定方法.密度梯度管法 |
| 9. | Study on the rapid purification of rat islet cells with push - type tube by modified mono - density gradient method 推进式离心管结合单密度梯度法快速纯化大鼠胰岛 |
| 10. | Plastics - methods for determining the density of non - cellular plastics - part 2 : density gradient column method 塑料.非泡沫塑料的密度测定方法.第2部分:密度梯度管法 |