难切断的英文

• hard-to-break

• 难:    catastrophe; calamity; disas ...
• 切断:    cut off; switch off; turn ou ...
• 难切削钢:    low machinability steel
• 切断:    cut off; switch off; turn out; key off; key out; shut off; break; cut-out; disconnect 切断敌人后路 cut off the enemy's retreat; 从底部或根部切断 sever at the bottom or root; 通电话时线路被切断 be cut off while talking by telephone; 切断电键 split key; 切断电路 clear the circuit; 切断电源 dump
• 半切断:    half cut off; half cut-off

例句与用法

1. The curves showed that the moisture contents of straw and the shear bar are the main factors impacting the cutting ratio besides cutting speed . the speed of 40mm / s is necessary to cut off wet straw . ( 4 ) the testing results indicate that the rotary speed of the blade axle need to be more then 1230 rpm ( rotary radius of the blade is 25cm ) to cut off straw ( with moisture content less then 20 % )
   试验结果表明，对于干的长秸秆，刀片切割速度达到15m / s时，切断率达100 ；对于干的短秸秆，刀片切割速度需达到20m / m / s以上；要切断湿秸秆需要有40m / s以上的切割线速度；加定刀与不加定刀对于切断麦秸这类软质秸秆是非常重要的，其切断速度差别很大；另外，麦秸不同部位所需要的切断速度也是不一样的，根部较之顶部和中部更难切断。