IP dust and waterproofing test method - 1 views
IP dust and waterproofing class defines the extent to which mechanical and electronic equipment can provide protection against solid foreign matter entry (including body parts such as fingers, dust...
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What are the requirements for geotextile construction testing - 0 views
What are the requirements for construction testing? The quality of geotextiles includes the quality of the raw materials in the field, the progress of the earthwork operation, and the quality testi...
Influencing factors and measurement methods of lithium battery self-discharge - 1 views
The self-discharge reaction of lithium-ion batteries is inevitable. Their existence not only leads to a reduction in the capacity of the battery itself, but also seriously affects the battery's cyc...
Hotel luggage car cleaning method - 1 views
There are a lot of luggage carts in the hotel. The luggage carts are used by guests in the lobby and room service staff. Hotel luggage carts that we usually see are always clean and spotless. What ...
What a medical stethoscope can help doctors hear - 1 views
Whether it is internal medicine or surgery, emergency or anesthesia, anyone who has seen a doctor at the hospital will notice that a medical stethoscope is always hanging around the doctor's neck.E...
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