Shandong China Coal Group Instrument Branch

Since the outbreak of a new coronavirus-infected pneumonia in Wuhan, Hubei, from the central to the local, there has been a consensus and a difficult situation. As a large-scale enterprise with a high

Gas detector is a kind of gas leakage concentration detection instrument tool, mainly using gas sensor to detect the existence of the gas type in the environment, gas sensor is used to detect the comp

The classification of gas detector is different according to different standards. This paper mainly introduces the classification according to the use method of gas detector, detected objects and sens

In our shandong province jining city in the countryside still have the habit of drilling Wells, but drilling Wells often dozen meters but no water, this is a waste of money and energy, so how to judge

Well is one of the smallest water conservancy projects since ancient times, but it is also a special water conservancy project involving many disciplines. Its characteristic, it is the universality th

The severe epidemic situation of "new coronavirus infected pneumonia" affects the hearts of every Chinese people, and also stimulates the majestic strength of unity of all people. In the fight against