Complex sentence: Lamps are designated by symbols such as "MR 16" where the diameter is represented by numerals; common sizes for general lighting are MR 16 and MR 11, with MR 8 used in specialty applications.
Split into simpler sentences: Lamps are designated by symbols such as "MR 16" where the diameter is represented by numerals. Common sizes for general lighting are MR 16 and MR 11, with MR 8 used in specialty applications.