Diamond jewelry

Characteristics and uses of outdoor waterproof led landscape strip light belt

What are the characteristics of outdoor waterproof led landscape strip lights? Today, Hualiangxing Xiaobian will explain the characteristics and uses of outdoor light belts. Outdoor LED light belt waterproof, protection grade ≥ip67, imported Osram light source, a single LED light bead power is very low, generally between 0.2~0.5W, high brightness, low power consumption, long life, …

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What is the difference between copper foam and nickel foam? Does metal foam filter?

Copper foam is a different kind of multifunctional material with a large number of connected or disconnected holes uniformly distributed on the copper matrix. Copper foam has excellent electrical conductivity and ductility. Compared with nickel foam, copper foam has low preparation cost and excellent electrical conductivity. It can be used to prepare cathode (carrier) materials …

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Cytochrome P450 and temperature-induced modulation of Raman scattering

Abstract Temperature evolution of resonant Raman scattering for high-quality bilayer 2H-MoS presented encapsulated in hexagonal BN flakes. The observed resonant Raman scattering spectrum is induced by a laser energy of 1.96 eV, close to the A-exciton resonance, showing a rich and unique vibrational signature not observed in non-resonant scattering. The emergence of first- and second-order phonon …

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Why do you need a scale of several thousand dollars to call gold?

Gold HEADGEAR VALUE IS HIGH, GRAM IS ABOUT HUNDREDS OF PIECES, MANY CONSUMER IS AFTER BUYING HEADGEAR, THE ELECTRONIC SCALE THAT COMES HOME CAN USE ONESELF HOUSEHOLD ANSWER WEIGHS, BUT LOOK, ERROR IS NOT SMALL HOWEVER. But actually, you know what? The scale, which jewelry calls gold, is quite different from the common electronic scale …

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