Polyaluminum chloride is an inorganic macromolecule coagulant. It is an inorganic macromolecule water treatment agent with larger molecular weight and higher charge produced due to
Apr 08, 2022
The transition fit means that there may be a clearance fit or an interference fit when the hole and the shaft are assembled, and the tolerance zone of the hole and the tolerance zo
Apr 07, 2022
The rolling element is the core element in the rolling bearing. Due to its existence, there is rolling friction between the relative moving surfaces. The types of rolling elements
Functional groups are atoms or groups of atoms that determine the chemical properties of organic compounds. Common functional groups include hydroxyl, carboxyl, ether, aldehyde, ca
Apr 06, 2022
Homologue refers to organic compounds with similar structures and different molecular composition by several "CH2" atomic groups; generally appear in organic chemistry, a
Solubility product refers to the dissolution equilibrium constant of the precipitate, expressed in Ksp, and the size of the solubility product reflects the solubility of the insolu
Apr 05, 2022
A supersaturated solution refers to a solution in which the concentration of the solute in the solution has exceeded the solubility of the solute at the temperature and pressure at
Definition of esterification reaction The acylation reaction on the oxygen atom refers to the reaction in which the hydroxyl hydrogen atom in the alcohol or phenol molecule is repl
Apr 04, 2022
In the presence of Lewis acids such as anhydrous aluminum trichloride, aromatic hydrocarbons react with haloalkanes, and an electrophilic substitution reaction occurs on the aromat
The rotary excavator is a comprehensive drilling rig, which can use a variety of bottom layers, and has the characteristics of fast hole forming speed, less pollution, and strong m
Apr 03, 2022
Slurry treatment is a process that separates the solid phase particles in the mud from the solid and liquid, improves the porosity of the pile foundation, reduces the amount of ben
Tensile element The typical structure of tensile element is steel core aluminum stranded wire, fiber optic cable and so on. In short, the tensile element plays a major role in the
Apr 02, 2022
