The cause of amplitude and phase imbalances in sum and difference channels, amplitude and phase imbalances influences over angle measurement accuracy are analyzed.

Study on influence of heat-exchanger channel flange seal performance subjected to high temperature difference;

Analysis of temperature differences between top and bottom glass plate of annealing kiln;

Investigation on surface cracking damage of concrete under big temperature difference;

Regard structure transition level mass concrete in the skyscraper as the example,this text respect analysthe mechanism of the mass concrete crack from concrete internal and external difference in temperature calculation,concrete thermo-stress calculation etc.

Thinking effect of high temperature, this paper discusses tolerate stress, danger area, difference in temperature stress , and validates that the effect of fins in strength is to reduce stress of difference in temerature.

Ltd controlled reservoir wall cracks of enhanced pumping station,the article discusses the problems of wall cracks of enhanced pumping station reservoir,and suggests some technical measures to control reservoir wall cracks effectively,such as to reduce to general temperature differences of common con- crete and to enhance the extreme stretch.