gear system gear testing apparatus gear-testing jig gear tooth gear-tooth micrometer gear tooth vernier gear-tooth vernier callipers gear train gear-train diagram gear transmission gear-type coupling gear-type pump gear wheel gehlenite geiger-muller counter geiger plateau geiger plateaux geisler alloy gel gelate |
gear system зъбно зацепване система от зъбни колела Търсената дума е намерена |