going too far is as bad as not going far enough; beyond is as wrong as falling short; too much is as bad as too little
ballast distributing and trimming machine；ballast distributing and regulating machine
One Machine to More Machine
technique and equipment of on-machine cooling in sintering machine
a bad quarter of an hour
allowance for bad debts
Arranging order according to good and bad
ash degree-bad worth symbiosis matrix