In English, a text reference is a symbol indicating which line, such as "L.648", line 648; Stands for "left" (relative to R stands for "right", right), such as left, left lane, left passage, etc.
The common meanings of capital letter L are: L is the symbol of unit "liter" and also the unit of volume and volume; In physics and geometry, length is often expressed by L or L; In electromagnetism, the symbol of inductance; The symbol of liquid in chemistry.
26 English letters
Aa、Bb、Cc、Dd、Ee、F、Gg、Hh、li、Jj、Kk、LI、Mm、Nn、Oo、Pp、Qq、Rr、Ss、、Uu、Vv、Ww、Xx、Yy、Zz .
There is a rule in the writing of uppercase and lowercase letters, that is, all uppercase letters are upward, and lowercase letters will be capitalized and fully written, so you need to pay attention to writing. Capital letters are generally used at the beginning of a sentence, and they will start with capital letters. For some proper nouns, their initials are also capitalized.