The phrase "adequate knowledge of the" is correct and usable in written English.
You can use it when discussing someone's level of understanding or expertise in a particular subject or field.
Example: "To apply for this position, candidates must demonstrate adequate knowledge of the relevant software and tools."
Alternatives: "sufficient understanding of the" or "competent grasp of the".
But legal staff usually lack adequate knowledge of the institutions of online advertising and the unusual vulnerabilities and risks.
Adequate knowledge of the prevailing atmospheric conditions in an environment is essential for proper network planning.
The most common type she called drifters, people who willingly changed their beliefs because they lacked adequate knowledge of the arguments pro or con.
Even those with adequate knowledge of the process can find it time consuming when also dealing with the welfare of their patient and other important administrative duties".
The subjects of his paintings show that he had an adequate knowledge of the Bible, Ovid's Metamorphoses, and the Aeneid.
While dealing with devices in hazardous area the designers should have adequate knowledge of the sources of heat generation.
Area Coveragedemonstration to the faculty, by course work and/or examination, that the student has adequate knowledge of the major areas of the history of art.
The student is expected to demonstrate an exceptionally thorough reading knowledge and an adequate knowledge of the grammatical structure of one language.
The adequate knowledge of the modal characteristics (natural frequency, modal shapes and damping) constitutes an important start point to carry out a reliable dynamic structural analysis.
An adequate knowledge of the structural concrete performances can be obtained from a large number of cores where performing destructive tests.
An adequate knowledge of the heat flux distribution in the furnace walls is a prerequisite for the computation of metal temperatures.
