In order to resist on the cavitation erosion,many researchers try to change the solidity and tenacity of the coatings,but ignore the influence of surface charac
Owing to heavy dynamic and thermal loads,PCBN tools are seriously w during hard cutting,which largely constrains the improvement of their machining performance.
Currently,transplanting mechanisms for dryland plug seedlings in China are mainly semiautomatic and have low efficiency.The rotary seedling pick-up mechanism wi