one of a group of cells that develop in the walls of the seminiferous tubules. Spermatogenic cells include spermatogonia, spermatocytes, and spermatidsâall of which are transitional forms between primary sexual cells and spermatozoa.
long-haul optics. Long-haul optics refers to the transmission of visible light signals over optical fiber cable for great distances, especially without or with minimal use of repeaters. Normally, repeaters are necessary at intervals in a length of fiber optic cable to keep the signal quality from deteriorating to the point of non-usability. In long-haul optical systems, the goal is to minimize the number of repeaters per unit distance, and ideally, to render repeaters unnecessary.
The day was used to show off the companyâs latest long-haul tires, the Fuel Max LHS and the Fuel Max LHD G505D. The company claims they are the most fuel-efficient steer and drive long-haul tire combination in North America. âTechnology in tires is advancing like IT technology,â said Brian Buckham, general manager, commercial marketing product and innovation, Goodyear.