This means the structure of your objects is not tied to the structure of the XML — you can restructure your object classes without needing to change the XML format used for external data transfer.
In concrete structure, due to coefficient of conduction for concrete is small, when external environment changes sharply, the change for internal temperature has distinct hysteresis.
在混凝土结构中，由于混凝土导热系数小，外部环境急变时，内部温度变化存在明显的滞后现象。
3
We think the change of the structure and dielectric property of er fluid are the main cause of the fact that the transmittance could be adjusted under the external electric field.