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High-quality aluminum and aluminum alloy hot-rolled plate GB 10568-89
Aluminum and aluminum alloys hot-rolled sheets
The GB 10568-89 standards define the requirements, test methods, inspection rules, packaging, mark and quality certification of the aluminum and aluminum alloy hot rolled sheet. This standard applies to the dimensions and tolerances of hot-rolled she......
1075 
Sophia
Commonly used English vocabulary for customs declaration
Customs in the Eyes of a Travelling Commercial Manager
As the travelling commercial manager for a large corporate organisation, I have seen a great deal of the world. Through various business trips to markets all over the globe, I have spent a fair amount of time in airports and customs’ halls. ......
Non-destructive testing noun (AD)
A: Ultrasonic Testing
Ultrasonic testing (UT) is a form of nondestructive testing used to detect and measure material defects, measure thickness, inspect for corrosion and to monitor welding processes. UT utilizes short bursts of sound energy at high frequency, usually above 1 MHz, to create sound......
Drilling down the mountain
CREEPING DOWN THE MOUNTAIN
A long time ago, in a distant mountain, there was an ancient secret. It was said that if one ventured deep into the mountain, they could find a hidden treasure. For centuries, brave adventurers attempted to find this treasure, but none returned alive. Finally, an old ma......
paramagnetic minerals
Magnetic Minerals
Magnetic minerals are minerals that contain magnetic properties and have the ability to be attracted to a magnet. Magnetic minerals have a variety of uses, both industrial and aesthetic, and are some of the most essential and abundant minerals on the planet. Magnetic minerals a......
demagnetizing field
Counteracting Magnetic Fields
People often take the wonders of magnetic fields for granted, but they can also be strong enough to adversely affect our electronic equipment if not properly managed. Magnetic fields are invisible forces that exist everywhere in nature. The Earth’s magnetic field he......
wet mill
Despite a generally accepted consensus that proper lubrication is integral to efficient functioning of engines and other moving parts, there is still some debate over the optimal form of lubrication--coolant- and air-based systems or friction-reducing compounds. Each system has advantages and disa......
Dust removal for crushing operations
The way dust control is handled in demolition work is very important in order to protect workers, customers, public and the environment. Dust is made up of harmful particles and can have long-term health effects, including respiratory problems. Therefore, it is critical to understand and implement......
crack theory
, 关于Wegeners Continental Drift Theory
Wegener’s Continental Drift Theory, first proposed by German scientist Alfred Wegener in the early 20th century, proposed that the continents had once been joined together and had since moved apart, an idea that contradicted long-held popular beliefs. Wegene......
Construction Technical Operation Regulations
An example of the construction technology operation procedure
The purpose of this document is to establish an effective and clear procedure for construction technology operations. This document outlines the content, timing, and proper process for the construction technology operations that are ne......
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