Principles and Engineering Design of Lightning Protection for Wireless Communication Base Stations (2) 2.1 Structure and Basic Requirements of Lightning Protection Grounding System: Lightning protection grounding system consists of earth, grounding electrode, grounding lead-in, grounding busbar, a

Capacitance sensor I have a new statement When the non-electrical quantity measured by the electrical measurement method, must first convert the measured amount of the non-electrical input electrical quantities, usually non-electrical quantity into an electrical amount referred tr

[ China Agricultural Machinery Industry News ] After years of development, China's agricultural aviation operations have increased year by year, but compared with developed countries such as the United States and Japan, China still has a large gap. On the one hand, the number of agricultural ai

2017 China International Agricultural Machinery Exhibition (referred to as "International Agricultural Machinery Exhibition"), scheduled for October 20, 2017 -28 at the Wuhan International Expo Center. As the "first in Asia, the world famous" agricultural exhibition, has long been to promote China a

The importance of LED explosion-proof lights. The factory warehouse does not use LED explosion-proof lamps and is required to order rectification. It can be seen that the importance of LED explosion-proof lamps. Recently, the District Agriculture, Forestry and Fisheries Bureau and the Southwest B

0 Preface Shannan Yunnan Wen Wen River tungsten mine is one of Wenshan Malipo Zijin Tungsten Industry Group Co., Ltd. is the focus of mining enterprises, divided into mining in the south section of seedling, Mau, at present, mainly ore mining seedling south east and west . The rock joints and fiss

It is very important to test the corn during the breeding process. It is necessary to screen the type of agricultural traits, species information, etc. It takes a long time to collect information data. Aiming at the current state of backward technology and equipment for corn breeding in

Model NO.: DP-26B-1 Weight R

In practical applications, the directional control valves can be divided into several categories according to different needs: (1) According to the flow direction of gas in the pipeline, if only gas is allowed to flow in one direction, such a valve is called a unidirectional control valve, Valve, sh

There are a large number of drying equipment manufacturers in China, and there is a certain difference between the equipment produced and the quality of products. Drying equipment is different from other general-purpose equipment. Except for the visible factors of the mechanical equipment, the tech

A friend who just got a driver's license asked: How to put the clutch? The car does not shake? You adjust the seat when you get in the car and adjust the seat to the right position. It's generally easy to step the clutch down. If you feel like you