Hence, ebonite is in fact one kind of thermosets.因此, 硬质橡胶实质上是一种热固性塑料.Some properties were also discussed and the multi - functional ebonite would be promising in future development.还简述了硬质橡胶性能,指出通过改性使其 高 功能化是这类硬质橡胶材料的发展方向...
今天是 愚人节.Today is April Fools'Day .是的.我们有感恩节 、 劳动节,以及愚人节.Yes, we have Thanksgiving Day, Labor Day and April Fool's Day.愚人节在四月一号.April Fool's Day is on April 1....