- A gear with teeth radially arrayed on the rim parallel to its axis.正齿轮：牙状齿按辐射形安置在与轴平行的边缘上的齿轮
- thermions
- thermistor
- thermistors
- Thermit
- thermo-
- thermo-
- thermoacoustic
- thermocautery
- thermochemistry
- thermocline
- thermoclines
- thermocoagulation
- thermocouple
- thermoduric
- thermodurics
- thermodynamic
- thermodynamical
- thermodynamics
- thermoelectric
- thermoelectricity
- thermoelectron
- thermogenesis
- thermogram
- thermograph
- thermographies