"simultaneous progress" is a correct and usable phrase in written English.
You can use it to refer to multiple activities or accomplishments that are all progressing at the same time. For example, "The team was making simultaneous progress on the project and their newest product launch."
Khartoum is far from blameless in the oil dispute, unhelpfully linking its resolution to simultaneous progress on intractable border, security and debt issues.
Later today, White House officials, in what appeared to be an attempt to tone down Mr. Bush's comments, said he was not departing from his two-month-old policy of seeking simultaneous progress on improving security in Israel and a political solution for the Palestinians.
President Obama is attempting a triple play this week that eluded his predecessors over the past two decades: simultaneous progress on the most vexing and violent problems in the Middle East — Israeli-Palestinian peace, Iraq and Iran — in hopes of creating a virtuous cycle in a region prone to downward spirals.
These contradictory phenomena indicated the possibility that the phase separation of aqueous PVA solutions is attributed to the simultaneous progress of spinodal decomposition and gelation.
In recent years the significant increase in the power density of internal combustion engines has been supported by the simultaneous progress in turbocharger development.
Modular frameworks for crop modelling have evolved through simultaneous progress in crop science and software development but differences among these frameworks exist which are not well understood, resulting in potential misuse for crop modelling.
Conversely, simultaneous technological progress in two areas of highly synergistic potential, namely genomics and immunotherapy, has opened up conceptually novel paths to therapeutically exploit tumour mutations.
Further research on the minimaxity of admissible simultaneous prediction is in progress.
We report the application of a novel optical Raman-based measurement technique for the simultaneous determination of the progress of mixing on the micro- and on the macro-scale.
Assays for rapid detection of water-borne and shellfish-borne pathogens have been developed and optimized, and progress toward simultaneous and real-time detection is underway.
This joint evolution can be seen as the result of a simultaneous pull from methodological progresses in risk handling, and push from technological progress in wildfire management decision support tools, as well as more broadly in computational power.
