Since August of this year, Kumho has launched a series of promotional activities for “Grand Priestly Members, Good Awards for Hitting Again†across the country. The event ended on November 30 at the Beijing Station. The final prize of 500,000 yuan “Family Dream Award…
Development and Utilization of Hainan Coconut Germplasm Resources
Hainan coconut is mainly divided into two types of fresh food and processing. Fresh fruit is generally used for tender fruit, and it is mainly supplied to the tourist markets in Hainan and the fruit market …
Recently, the National Development and Reform Commission formally approved the construction of a national engineering laboratory for tire advanced equipment and key materials by Qingdao University of Science and Technology, Software Control Co., Ltd. and Saihua Co., Ltd. The total investme…
The reporter learned on September 13, 2011 that, in recent days, good news came from Taiyuan, Shanxi: China Yiduo Group Special Purpose Vehicle Co., Ltd. won a bid to produce 117 sanitation trucks in Taiyuan. The “Procurement Contract†si…
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1 Optimum design of helical gear transmission The mathematical model of the helical gear transmission can be optimized to establish a variety of single objective functions or multi-objective functions. In this paper, the mathematical model is established with the minimum center distance an…
a Precipitation of solid material leakage, medium solidification, bonding.
b corrosion, galvanic corrosion c high speed, high pressure d vibration is too large, cavitat…