With the advancement of wireless video transmission technology, drone aerial photography is no longer performing high-altitude viewing of video and pictures. It is already possible to implement real-time wireless image transmission. As a result, drone aerial photography has been widely used i…

1. Single screw pump pressure to determine:

The maximum output pressure of a single screw pump is determined by the number of bushing stages, the number of bushing leads:

Level 1: The maximum working pressure is 0.6 MPa;

Level 2: The …

As of May this year, Shandong natural gas vehicles have grown to 86,823 vehicles, including 12,965 LNG (liquefied natural gas) vehicles, ranking first in the country. In 2013, the Shandong road transport industry used a total of 60.243 million cubic meters of natural gas, equivalent to a…

I. Introduction

Geological reserves of manganese ore resource with economic value reached 302 million t, accounting for No. 7 in the world. The reserves of manganese ore resources in …

1. introduction

AC asynchronous motor has been widely used in China's coal, petroleum, chemical, steel, power generation, water supply, cement and building materials due to its simple structure, high operational reliability, strong environmental adaptability and excellent drag perform…

To become a qualified dispatcher, you must have a relatively comprehensive business knowledge, have rich work experience, have certain management and coordination capabilities, and have strong ability to handle various emergencies.
The basic business knowledge that dispatchers must be …

FIG components shown to be more useful substances in solution all metals and anions, and their change with metal ligand, or a charged anion. Such a graph can be calculated and drawn by computer.

The b…

The digital pressure gauge produced by Changzhou Liangbang Instrument Co., Ltd. has high precision, high stability, error ≤ 1%, internal power supply, micro power consumption, stainless steel housing, strong protect…