The phrase "and propagate at a" is not complete and lacks context, making it difficult to assess its correctness in written English.
It could be used in a scientific or technical context where propagation is being discussed, but it needs additional information to clarify its meaning.
Example: "The signal will travel through the medium and propagate at a specific speed."
Alternatives: "and transmit at a" or "and spread at a".
These waves are left handed polarized on the spacecraft frame and propagate at a small angle to the magnetic field, presumably growing from the free energy of newly accelerated protons.
Following initiation by the application of aqueous hydrochloric acid (HCl) to a penetrative coating defect, underfilm corrosion is characterised by the onset of coalesced filiform-like features, which lengthen with time and propagate at a rate which is largely independent of the quantity of initiating HCl.
The computations are carried out within the context of the hydrodynamic theory where the flame is treated as a surface of density discontinuity separating burned gas from the fresh mixture, and propagates at a speed that depends on the local curvature and hydrodynamic strain rate.
The symmetric backward-wave solution, seen at β = 5 and propagating at a speed close to the Rayleigh wave speed (Figure5c,d), is probably caused by this mechanism, though the parameter range that allows it is quite limited.
In specimen WT-RF-0, the cracking pattern was more widespread and propagated at an angle of 39°.
The rupture of area D started 40 s after arrival of the assumed maximum rupture front at a velocity of 3.0 km/s and propagated at an average rupture velocity of 3.0 km/s.
In this case, multiple crack initiate and propagate at various locations.
In contrast to the large-scale waves, these medium-scale waves were not so dissipated and propagated at least for a distance greater than 1,500 km from the ionospheric epicenter.
Typically, FAI regions have a zonal width of 100 200 km and propagate eastward at a velocity of 40 140 m/s (Fukao et al. 2006).
Furthermore, for flames that conduct heat anisotropically and that propagate at an angle to the magnetic field, the flame speed increases due to the non-uniform magnetic field.
