After the United States and the United States climbing competitions, clubs climbing competition, more and more people are participating in this rock climbing fashion campaign. In order to develop the cause of mass sports, the promotion of the level of extreme adventure sports in our provin…
300. What are the operating points of manual development?
A: (1) Pour the developer into a container, dissolve it thoroughly with warm water, and mix it thoroughly before use. Note the developer's temperature and other development conditions.
(2) …
Its English name is called CARABINER, and domestic mountaineering circles call it iron lock.
Iron locks used in early climbing were made of steel or iron. Steel is characterized by its sturdiness and durability and its high endurance (some can withstand 4,000 to 5,000 kilograms of …
214. What are the basic requirements for chemical properties of offset printing paper?
A: During the offset printing process, it is required that the paper does not chemically react with the wetting fluid and graphic ink film transferred from the printing …
The design of packaging containers should have aesthetic value. This is almost no controversy because people need not only material satisfaction but also spiritual satisfaction. Therefore, excellent packaging container design should be a high degree of unity of…
Driven by the development of the chemical fiber industry, screen printing has become more and more widely used in the decorative processing of blended, interwoven, and purified fabrics. Screen printing is no longer limited to monotonous lines and color printing…
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At the slitting edges, it was sometimes found that the tissue paper and corrugated medium did not bond.
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