在链传动中,为什么尽量不用过渡链节?
参考答案:
当链节为奇数时,需要用过渡链节才能构成环状,过渡链节的链板在工作时,会受到附加弯曲应力,故尽量不用。
Having worked nonstop for three hours in the sun, John returned home, ______.
A.tired and coldly
B.confused and drunk
C.full and sleepy
D.thirsty and hungry
回收塔进料含水量大受影响的是()。
A、循环量波动
B、回流量波动
C、真空度下降