50x 电机
100x 钢筋混凝土梁
500x 钢管
500x 铜板
Did you knew that you can support me on Patreon? As a freelancer, you can weight into my work more than you can think, every single donation is time for me to do more awesome work for the community!
https://www.patreon.com/EDSM
Or buy me a beer on Paypal ;)