橡胶的硬度在70-80度,请问要用哪种材料,请具体说明material must be kind of rubber with hardness of 70shorA to 80shoreA是做耳机用的,要求防水.

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/07 20:47:52
橡胶的硬度在70-80度,请问要用哪种材料,请具体说明material must be kind of rubber with hardness of 70shorA to 80shoreA是做耳机用的,要求防水.

橡胶的硬度在70-80度,请问要用哪种材料,请具体说明material must be kind of rubber with hardness of 70shorA to 80shoreA是做耳机用的,要求防水.
橡胶的硬度在70-80度,请问要用哪种材料,请具体说明
material must be kind of rubber with hardness of 70shorA to 80shoreA
是做耳机用的,要求防水.

橡胶的硬度在70-80度,请问要用哪种材料,请具体说明material must be kind of rubber with hardness of 70shorA to 80shoreA是做耳机用的,要求防水.
材料为NBR,硬度为80度