Is there a standard database layout for repetitive information?
You need two related tables. E.g.:

Table "Test": TestId PK, operator, test_date

Table "Result": ResultId PK, TestId FK, Object, TestResult


Where the "Test" table is the main table and the "Result" table is the details table. Test.TestId is a primary key (PK). Result.TestId is a foreign key (FK) related to Test.TestId. I.e. you have a one-to-n relation between "Test" and "Result".

In Access' relationships editor it would look like this:


Splitting a table into different tables to avoid repeating information is called Database normalization (Wikipedia)