With the advancement of network technology, many occasions require the long-distance transmission of optical fiber transceivers. As a result, foreign and domestic manufacturers of optical fiber transceivers are very numerous, and their product lines are extremely rich.

The typ…

The maintenance of the three-roll gate is very important. Like the automobile, it needs maintenance and maintenance. The maintenance and service of the three-roll gate directly affects the service life of the three-roll gate. Therefore, regular maintenance and maintenance of the three-roll ga…

Alkali aggregate reaction crack refers to cracking caused by alkali aggregate reaction in concrete.

Has the following characteristics:

(1) If the concrete is unconstrained (no ribs or less ribs), the alkali aggregate reaction crack is net-like …

The no-load test has the following requirements:

(1) Pressing the start-up procedure to start and stop, all relevant chain systems should meet the technical requirements;

(2) The moving cone rotates in the forward or reverse direction (autobiog…

China's valve industry is steadily increasing. Correspondingly, North America and the European Union as the traditional market for valve products, while still occupying a large market share in the global valve market, will tend to slow down in terms of growth rate. According to the anal…

(I) Background and Challenges

In September 2011, the Opinions on Developing Safety Technology Prevention Work in Rural Areas were issued to deepen the implementation of the rural police strategy and promote the informationization, standardization, harmonious const…