The algorithm in the algorithm cannot be used for the arc of the end point line parallel to the X axis, because the denominator is (y2-y1) in the formula; the literature <2> clearly gives the two sets of center coordinates, but the author believes that Its trade-offs are more compl…

Redispersible powder is a kind of widely used building additive. For a long time, its technical formula and production technology have been monopolized by foreign enterprises. Afte…

From December 12 to 14, Hu Jintao, general secretary of the CPC Central Committee, president of the country, and chairman of the Central Military Commission, inspected work in Liaoning Province. During the inspection, Hu Jintao emphasized that it is necessary to vigorously improve the capabilit…

In the past two years, the textile industry in Shaanxi Province has been actively implementing the national energy conservation requirements. While eliminating backward production capacity, a group of enterprises have used advanced technologies to transform key equipment for energy consumption…

Correct choice of the valve, but also the correct installation, maintenance and operation, so as to give full play to their effectiveness. The installation of the first section of the installation of the valve quality, a direct impact on the use, it must be carefully noticed. (A) the directi…

…

QFMH Tooling Systems was established to bring precision, accuracy and quality to China's manufacturing industries through high precision tool holding systems. Over the years, our products have been well accepted by…