Fire bolt for a furnace
foundation bolt for motor
magnetic particle inspection for axle
Polyester Fibre for for spinning
statistical and summarized method for axle load and wheelbase of vehicle
ultrasonic inspection for axle
Education for defective;Education for disabled;Education for feebleminded children
Education for disabled;Education for defective;Education for feebleminded children
Education for feebleminded children;Education for disabled;Education for defective
effective diameter of bolt or high-strength bolt
Fastening Bolt， Binding Bolt
reamer bolt [= rimer bolt]
taper bolt [= tapered bolt]
a high regard for Confucian classics and a low regard for commentaries