1 answer Reward0 Remaining Time 0 Day
硬质合金是导电的,因为硬质合金主要是由碳化钨与钴或钛等金属物组成的。
0863709351 2016-10-26 17:14:03
Wococarbide
Member login
Join free
Reset Your Password
Email:
SMS code:
Send Code
New Password: