The phrase "a primary mode for" is correct and usable in written English.
It can be used to describe a main method or approach for achieving something or for a particular purpose.
Example: "The internet has become a primary mode for communication in the modern world."
Alternatives: "a main method for" or "a key approach to".
While indignant reading re-enters the academy as one type of feminist criticism, which emphasizes the ethical at the expense of the affective, indignation in its most emotional form has become a primary mode of expression for fan communities.
For centuries, as a primary mode of transportation, horses have helped shape our notions of personal freedom and independence.
Although we acknowledge that AST entails both walking and biking to/from school, only 1% of the sample living within 2 km from school used biking as a primary mode choice and thus were excluded for analysis.
A study showed that 88% of voters with DVRs skip ads and that 45% use something other than live TV as their primary mode for viewing videos.
The primary decay mode for isotopes lighter than 153Eu is electron capture, and the primary mode for heavier isotopes is beta minus decay.
John Carpenter's Halloween (1978), produced on a $320,000 budget, grossed over worldwide and effectively established the slasher flick as horror's primary mode for the next decade.
The primary decay mode for isotopes of protactinium lighter than (and including) the most stable isotope 231Pa (i.e., 212Pa to 231Pa) is alpha decay and the primary mode for the heavier isotopes (i.e., 232Pa to 240Pa) is beta decay.
Horizontal gene transfer (HGT) among bacteria and their mobile genetic elements (MGEs) is the primary mode for the spread of antibiotic resistance and virulence factors in clinically important pathogens [6], [9], [10].
Endovascular aneurysm repair (EVAR) is increasingly being used as primary mode for abdominal aortic aneurysm (AAA) repair in suitable patients owing to reduced perioperative mortality compared with open repair 1.
They also tend to be farther from population centres: better a hazardous chemical spill on a remote stretch of canal than on an interstate running through a big city.In 2009 ASCE estimated a five-year funding shortfall for inland waterways the primary mode of transport for much of America's exported commodities of $20.5 billion.
