Star-shaped engine of airplane Elliptic Trammel Sewing machine Maltese cross movement - the second cross-shaped cassette mechanism for controlling the clock - control the motion of second hand of clock Car gear mechanism clutch gear Naval gun ammunition filling system system of ammo re-filling.....

Safety production focuses on implementation. In order to better understand the safety production situation of the company, we entered Hebei Changhai Heavy Industry Machinery Co., Ltd. located in Zhongjie Industrial Park. Strictly caught everywhere Upon entering the gate of Changhai, a large safet.....

Home>Bearing knowledge>Introduction to bearing erosion /*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Introduction to bearing erosion Source: China Bearing Network Time: 2014-04-30 /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089'; Damage condi.....

Experimental Discussion on Improving the Temperature Resistance of LED Light Sources (II) Introduction Semiconductor lighting is a technological revolution in this century. It is still a baby from the perspective of technology maturity. Although LED high-power white light technology develops rapid.....

Molecular Structure of Polymers and Effect of Changing Conjugated Side Chains on Polymer Properties In recent years, two-dimensional conjugated polymers have become a research hotspot in the field of polymer photovoltaic materials due to their advantages of wide absorption and .....

In the first quarter of this year, the number of export shoes at the Shenzhen port has decreased by more than 20% compared with the same period of last year. This is the case of the China Leather Network reporter recently learned from the website of the General Administration of Customs of China. A.....

The LED driving power supply is a power converter that converts the power supply into a specific voltage and current to drive the LED to emit light. Generally, the input of the LED driving power source includes high-voltage power frequency alternating current (ie, commercial power), low-voltag.....