[`drü ´nǝm·bǝr]
PHYSICAL CHEMISTRY A dimensionless group used in the study of diffusion of a solid material A into a stream of vapor initially composed of substance B, equal to
where MA and MB are the molecular weights of components A and B, MV and MW are the molecular weights of the mixture in the vapor and at the wall, and YAW and ZA are the mole fractions of A at the wall and in the diffusing stream, respectively. Symbolized ND .
- Sequanian
- sequela
- sequence
- sequence calling
- sequence check
- sequence checking routine
- sequence counter
- sequence error
- sequence monitor
- sequence number
- sequence of current
- sequence of tide
- sequencer
- sequence register
- sequence robot
- sequence stratigraphy
- sequence-stressing loss
- sequence timer
- sequence weld timer
- sequencing
- sequencing equipment
- sequential access
- sequential analysis
- sequential batch operating system
- sequential circuit