Gear power transmission is mainly through gear meshing to transmit power, realizing reducing and increasing speed or changing direction.

齿轮传动主要是通过齿轮的啮合作用来传递动力及实现减速、增速或换向的目的。

youdao

Aiming at heavy duty and low speed gear transmission, Zheng Zhou Research Institute of Mechanical Engineering puts forwards ZY-1 case- hardened double-circular-arc gear.

为此，郑州机械研究所针对低速重载齿轮传动领域设计了ZY-1型硬齿面双圆弧齿轮齿形。

youdao

Based on the characteristics of stable gear transmission and constant speed ratio, a kind of imperfect gear mechanism was studied in this paper.

基于齿轮传动平稳和恒速比的特点，文中研究了一种不完全齿轮机构。

youdao

HCD-14 Genesis uses optical recognition to identify the driver and initiate the starting sequence, while gear selection for the 8-speed automatic transmission is performed via paddle shifters.

ENGADGET: Hyundai unveils HCD-14 Genesis concept: suicide doors, gesture and eye controls

The M6 with the TwinTurbo V8's mesa-flat torque curve (500 pound-feet from 1, 500-5, 750 rpm) and multiplicity of gear ratios (seven-speed dual clutch transmission, the M-DCT) adds an uncanny effortlessness to the experience.

WSJ: 2013 BMW M6 Coupe Review: A Hurtling Flume Ride on Dry Land | Rumble Seat by Dan Neil

It comes with a 744cc, 48.8-horsepower engine and a five-speed transmission. (Beware the first-gear kick down that Italian personality makes it finicky sometimes to lock into place.) I found it stable to drive, even on Old Montauk Highway, and perfectly suited to zipping from Navy Beach to Clam Shack and back again.

FORBES: The Moto Guzzi V7 Racer: Chasing The Ghost Of Steve McQueen