derrick,derrick jib crane
相关英语词汇推荐
- knitted fishing net
- circular auto-control heating oven
- boring hose
- demodulator of frequency shift signal
- neocupferron
- wool-mohair-silk mixed fabric
- travelling microscope
- hardbake
- pig leather for making gloves
- wing float
- eupolyphaga sinensis
- pin disk mill
- round can end curler
- collar
- picture oscillating transformer
- coaling crane
- rotary press
- Brick model
- marsh mallow chocolate
- modular single point annunciator