cutting drum of coal drum shearer
Transferring drum and rubbing drum
Turning drum and twisting drum mechanism
combination of pole number with slot number
Even-number-mode-odd-number-order equal-order N-th power H-sque
Even-number-mode-odd-number-order equal-order N-th power H-squeezing
marked down the number-plate number
Mistake of row-column number in the drawing number of 1∶1000000
Odd-number-mode-even-number-order equal-order N-th power H-squeezing
recombination of the number of grain and the number of panicle
stop number (=F-number)
The Calling Number， Caller Number
UID number User IDentification number
3-drum building machine
A Brief Analysis of Zhao Ji’s Snare Drum Works
a new eight-corner drum mixing device