资讯

The resistance of these carbon composition resistors can be permanently changed ... Given that they’re basically just a solid cylinder they have good high-frequency characteristics.
It also makes the greenhouse gas easy to handle by turning it into a potentially valuable solid carbon substance. Shizuoka’s 10-year research project builds upon the unexpected outcome of a ...
Construction is on its way to becoming greener. New research describes a method of creating building material that is not only carbon-neutral — meaning it does not produce any carbon emissions ...