Switchover between one hook and two hook operation

open window theory

2-D open channel

3-D open cells network structure

3-D open cells structure

3rd stage open channel closure

4-way open T equipment

88open

a smooth open contour

abandoned open pit

Absolute Open Flow

Absolute Open Flow Capacity

Absolute Open Flow Potential

acid open hearth furnace

acid open hearth process

acid open hearth steel

act for the open account

active open

active open surface model