One state is trialling the unusual road markings that use an optical illusion to encourage drivers to slow down in high-traffic zones. The triangular, blue and white markings are a variation of ...
The new CSD-type strain-wave speed reducer from HD Systems Inc., Happauge, N.Y., is less than half the width of the company's previous CSF design, yet retains 70% of the rated torque. It's also 20% ...
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