A: Sewage drainage trench is set in the unit area outside the workshop, which is beneficial to the collection of primary rainwater. Trenches should not be set in the workshop. Q: P...

 Its biggest characteristic is that after the reinforcement cage is placed in the drilling hole and the conduit is poured, the bottom of the hole can be kept less or no sediment, a...

Original title: Have you ever used these fishing methods of drill pipe and drill bit? In the process of pile foundation construction with rotary excavator big bore, the accidents o...

Second, the outside of the drill pipe, including the threaded portion and the main body of the drill pipe, must be wiped clean. At the same time, a rubber cover (as shown in the fi...

 According to the plan, Meiguan Expressway needs to carry out roadbed splicing, pavement asphalt overlay, bridge splicing and reinforcement or demolition and reconstruction, ramp a...

For the evaporation of general solution, η can be taken as 0.98-0.7 (where X is the composition change of the solution, expressed in mass fraction). Where: Di — heating steam quant...

Original Title: Popular Science: Structure and Working Principle of Rotary Evaporator Rotary evaporator, also known as rotary evaporator, is a common laboratory equipment composed...

The outstanding features of the antifreeze dust suppressant include: 1, that antifreeze dust suppressant organically combines dust suppression and antifreeze, so that the product h...

The basic requirement for the extraction equipment is that the two liquid phases of the extraction system can be fully mixed, closely contacted and accompanied by a high degree of...

A variety of medical titanium alloys independently developed by Shenyang Metal Research Institute, Beijing Nonferrous Metals Research Institute and Northwest Nonferrous Metals Rese...

 It is reported that the titanium welded pipe forming deformation rebound compensation technology developed by Hunan Investment Jintian can meet the technical requirements of titan...

Advantages of thermally activated nickel titanium wire: 1. Less pain for patients: This results from a gradual increase in force and eventually a light force. The controlled therma...