The paper briefly presents the measurement techniques for micro\|rolling\|moment by means of micro\|rolling\|moment balances and free rolling method,with the emphasis on the gas bearing balance technique developed by High Speed Aerodynamics Institute of CARDC.

According to the principle of the interference of two beams and the buoyancy law,the principle and design of one buoyancy balance for measuring little mass change of a body is discussed.

It was found that the impact systems of the floating dust weather were West Siberia cold eddy,Okhotsk warm high and Tibetan Plateau high ridge at the level of 500 hPa;the dry-cold air at the level of 700 hPa transferred to Beijing ceaselessly,and the cold advection and baroclinic instability were strong,the gale and dust storm occurred in the strong cold advection area;the we.

Analysis of the positioning accuracy of ultra-precision stage with air-thrust bearings;

Firstly, TBAB-CH4 binary hydrate formation in the magnetic suspension weight adsorption instrument was researched and a new method for measuring the density and gas storage capacity of hydrates in magnetic suspension balance was proposed.