The known attempts to create a continuously-adjustable gear train with solid gears have led to development of some so-called adaptive gears. The most structurally simple version of continuously- adjustable gear train is a two-wheel planetary gear. It is an obvious fact that an active regulation of gear ratio for the gear should be based on the presence of con- trolled elements (parame... https://iwbnixchdne8.timeblog.net/70688123/histological-biomarkers-and-biometric-data-on-trahira-hoplias-malabaricus-pisces-characiformes-erythrinidae-a-bioindicator-species-in-the-mearim-river-brazilian-amazon