The smaller the pulverization particle size, the larger the surface area of ​​the particles, the easier it is to combine between the particles, and the easier to absorb heat and moisture during quenching and tempering. The gelatinization degree of the .......
Self-dosing agent. In a large pan, add soft soap, bleaching earth, 450 grams of soda, and 2270 ml of water, mix well, boil them to half of the original volume, then cool and store in a can. Use a hard bru.......
The hole gypsum board has a cylindrical hole penetrating through the front and the back of the gypsum board, and a backing material having a gas permeability and a sound absorbing material capable of abso.......
The nets sold on the market are made of pure cotton yarn, polyester cotton yarn, silk and polyester yarn. Different fabrics have different durability, economy and breathability.
(1) Cotton nets. I.......
At present, along wit.......
As a pollution-free pesticide , garlic has many wonderful effects on fruit trees.
Promote germination with garlic juice to smear the germination of grapes in plastic greenhouses, which can be germinated 7-10 days in advance; smear the br.......
Misunderstanding 1: moisture protection = waterproof
In many people's ideas, moisture protection and waterproofing can be painted equal. In fact, this concept is also inaccurate. Moisture-proof is mixed with a moisture-proof agent in the plate substrate, and th.......
As the saying goes, see people first look at the face, look at the face first look at the eye. If this sentence is used on cabinets, it is equally appropriate - look at the cabinets and look at the doors first. The cabinet door can be said to represent the "face" of a cabinet. It.......
Nowadays, more and more people choose the whole cabinet. Compared with the cabinets and boxes handcrafted in the kitchen in the past, the whole cabinet is beautiful and convenient, but don't think that choosing to use the whole cabinet can be done once and for all because the cabinet i.......
The college apartment passage management system is a basic project and an important organic part of the digital campus. It aims to provide students with convenient, fast and electronic services for learning, living, and security. The integrated information integration syst.......