The following conditions should be met: the relevant design documents are complete, and they have been reviewed; the special construction plan has been approved; the quality of the letter box is complete, the acceptance is qualified; the site conditions can meet the letter box construction requ…

The gas flow sensor is very useful for the gas test. In some cases, the gas flow sensor is used to judge whether the concentration of a certain gas is excessive. When using the gas flow sensor, we must clearly know whether the gas flow sensor is Normal work, if the fault can be judged, what are…

On August 7, 2019, the first China Commercial Vehicle Service Conference hosted by the China Automobile Dealers Association was held in Guangzhou. With the theme of “Innovation Drives the Industry, Service Creates Value”, the conference aims to promote the implementation of t…

The 5th Standing Committee of the 3rd China General Machinery Industry Association Drying Equipment Branch was held in Jinan City, Shandong Province from January 15th to 16th. The meeting was hosted by Shandong Tianli Drying Equipment Co., Ltd. Among the participants were Comrade Zhang Yubao, …

Ease of Wisdom: Intelligent Management to Build a New "Internet of Things +" Ecology

With the acceleration of the process of urbanization and industrialization, whether in urban and rural areas or in first-tier cities, water, air, and soil pollution are …

The centrifugal water pump is widely used in agriculture because of its simple structure, convenient use and maintenance, and high efficiency, but it is also annoying because it can't carry water. The reason for not deliberately obstructing Sheung Shui is analyzed.

1. There is air …

Residential advertising door installation:

1. The door column is the main bearing force, and the foundation must be firmly supported during installation;

2. The installation must be carried out according to the dimensions provided in the manual…

Public broadcasting is a broadcasting service for the public in a certain area. It is used to publish all kinds of news and internal information transmission, publish work signals, provide background music, and be used to call and forcibly insert emergency broadcasts of disaster accidents. It…

1. The length of the length cable is generally specified in feet or meters. The attenuation of the cable signal is proportional to the length of the cable. The longer the cable is, the greater the attenuation is. This is due to the physical laws of the cable.

2. The frequency resistan…

With the escalation of emission standards and the engine itself, the piston must constantly be adjusted and improved in terms of design and manufacturing, which has brought a considerable challenge to the piston industry. On the morning of September 5th, the Central M…