по длине

I

см. тж. по высоте

Each plate is bent lengthwise.

The web may be perforated lengthwise, similar to postage stamps.

There are 19 supports along (the length of) the upper panel jig.

II

The Rio Grande is the third longest river in the U.S.

Источник: Русско-английский научно-технический словарь на Gufo.me