One of the main features is dynamic updating of Flex compiler's configuration settings to include classes in compiled swf which are not reachable through code.
It has a better flex cracking resistance than those of natural rubber but a lower tear strength and a higher dynamic modulus.
它比天然橡胶具有较好的抗挠曲开裂性能，但撕裂强度较低，动态模量较高。
3
It has good physical properties, including high tensile strength, abrasion resistance, at high temperatures good dynamic behavior and flex cracking resistance at elevated temperatures.