"combine smoothly" is a perfectly correct and usable phrase in written English.
You can use it whenever you are referring to two or more things coming together in a seamless manner. For example, "The different elements of the project combined smoothly to form the final product."
The clean design of the programming language and its semantics shows that procedures and shared-variable parallelism can be combined smoothly.
Whether it was Ford, Farrell, Jonathan Joseph and Semesa Rokoduguni or Ford, Ben Te'o, Henry Slade and Elliot Daly combining smoothly there was invariably attacking pace and intent, a gourmet twist on the 'fish-and-chip' rugby Jones had promised.
A 24-minute deadlock after the break was broken when Hull's Richard Horne and Westerman combined smoothly for the back-row's second try, before Atkins and Lee Briers sent Joel Monaghan over for Warrington late on.
Nobel's talent for explosives combined smoothly with a head for business - by the year of his death, 1896, he had 93 dynamite factories - but the greater his success, the more it rankled his altruism.
research groups jointly proposed a model (we termed it as Wolynes-MB; see Table 2) where two or more Clementi-Onuchi Gō-potentials representing native structures are combined smoothly (Okazaki et al. 2006).
When this is syrupy, stir in butter a bit at a time so that it emulsifies, or combines smoothly with the wine syrup.
This extends nicely the classical Nelson Oppen combination procedure in a simple platform to smoothly combine convex and non-convex theories.
But either Apple hasn't pulled together enough information to match Google's maps, or hasn't been able to combine those sources smoothly enough.
A novel communication framework that can smoothly combine the quantization scheme and event-triggered strategy is developed, which apparently improves the communication efficiency of networks.
In this paper, a set of partial shape-preserving (PSP) spline basis functions is introduced to smoothly combine a collection of shape primitives with flexible blending range control.
