Design of special measuring tools for deep hole machining (3) Posted on September 30, 2022 The positioning head and the probe are equipped with cemented carbide, in order to increase the wear resistance of the gauge to improve its service life. The gauge uses standard bodies made in D+δ and D-δ dimensions, respectively, during the scribe line and during use. Its structural …
Using a square ruler to detect the verticality error of the moving parts of the machine tool Posted on September 29, 2022 The feed motion of the moving parts of the machine tool includes three directions of vertical movement - vertical direction, vertical direction and horizontal direction, such as: horizontal boring machine, milling machine, etc. Some machine moving parts have only two perpendicular movements, s…
Strengthening strawberry seedling management in high temperature and drought period Posted on September 29, 2022 At present, it is the key period for strawberry seedlings. According to the field investigations in Jiande and other places, the seedlings are moderate this year, which is slightly better than the large-scale lack of seedlings last year. However, red cheeks, Zhang Ji and other non-anti-ant…
Chemical process pump common problems and selection methods Posted on September 29, 2022 Cooling problems The delivery of high-temperature media sets higher requirements for the pump's construction, materials, and ancillary systems. Here are some of the different cooling requirements for temperature changes and the company's application of pumps: 1. For media temperatures …
Design of special measuring tools in deep hole processing (Fig.) Posted on September 29, 2022 Special gauges are gauges designed to measure a workpiece and are highly targeted. Special measuring tools have the advantages of being suitable for mass production, accurate indication, simple operation and high efficiency, and their pertinence is one of their shortcomings. For the dimensi…
Calcium and Victoria D are not gold partners Posted on September 28, 2022 When taking calcium supplements, taking vitamin D (hereinafter referred to as vitamin D) to promote calcium absorption, which has become a well-known calcium "great trick", some even called it a &q…
Olympic special vegetables will be on the public table Posted on September 28, 2022 Special vegetables for the Olympic Village during the Olympic Games will appear on the ordinary citizens' tables in the future. Yesterday, the Municipal Bureau of Commerce and the Municipal Agricultural Committee jointly organized a negotiation and matchmaking activity between five Ol…
New insulin pump Shenzhen Posted on September 28, 2022 The human body is composed of various parts of the organ, but the diabetic is a problem with the pancreatic organ. The normal pancreas can secrete enough insulin, while the diabetic pancreas does not produce or secrete less insulin. As the role of insulin is mainly used for hypoglycemic, diabe…
Key points of tobacco fertilization technology Posted on September 27, 2022 Tobacco fertilization method is: re-application of base fertilizer, early application of seedling fertilizer, and application of phosphorus and potassium fertilizer. The ratio of nitrogen, phosphorus and potassium in general fertility is 1:1:2, and 10 kg of compound fertilizer can be appl…
Aluminum electrolytic capacitors and tantalum electrolytic capacitors Posted on September 27, 2022 Aluminum electrolytic capacitors have large volume, large series resistance, large inductive reactance, and sensitivity to temperature. It is suitable for occasions with little change in temperature and low operating frequency (not higher than 25kHz). It can be used for low-frequency filte…
Technical opinion on fertilization and fertilization of two wheat fertilization techniques Posted on September 27, 2022 1. Balanced application of base fertilizer, complex soil conservation and fertilizer increase In recent years, some large households or farm farmers are busy, no application of base fertilizer is the cultivation of wheat, and topdressing is not timely, resulting in wheat seedling growth an…
The first domestic exchangeable class controllable reactor was successfully developed Posted on September 26, 2022 China's first 50Mvar/500kV AC class-controlled single-phase shunt reactor has successfully passed the factory test in Xi'an Xidian Transformer Co., Ltd., and its performance indicators are better than the agreement requirements, reaching the international advanced level…
