hard bubble
1.The length (or diameter) of the three kinds of hard domains (ordinary hard bubble (OHB) the first kind of dumbbell (ID) the second kind of dumbbell( IID)) in garnet bubble films, and the length of the dumbbelIs(ID IID) in different direction of rotation are measured in detail under the variety bias field.
3.The air-bubble formation in the hard anodic oxidation of aluminum alloy (ZL109) pistol was studied using a pulse/galvanostat electric power supply device.

