The governing equation was derived from the viscoelastic constitution relation by using material derivative.

在控制方程的推导中，对黏弹性本构关系采用物质导数。

Spirofluorene derivative, material for light-emitting element, light-emitting element, light-emitting device, and electronic device.

螺芴衍生物，发光元件用材料，发光元件，发光设备和电子设备。

Carbon nanotubes, derivative method and product for side-wall of the same, monolayer nanotubes liquid, method of preparing polymer material and polymer material.

碳纳米管及其侧壁的衍生方法及产物，单层纳米管溶液，制备聚合物材料的方法及聚合物材料。

In the case of compilations or derivative works incorporating previously published material, the year date of first publication of the compilation or derivative work is sufficient.

如果是之前发表材料的编辑或者衍生(编辑比如：文选，衍生比如：翻译或者编剧)，有权利使用编辑或者衍生作品的最初发表年份。

The organic thin film electroluminescence device with blue green color using new organic material, silicon alkyl derivative (SCS SiH), was fabricated.

采用新合成的有机材料硅烷衍生物作为发光物质制备了发蓝、绿光的薄膜电致发光器件。