Mryntu

When I use the command overrightarrow... I observe that the space between the two lines increases due to the presence of this command. I often use the command widebar..., bar... or overbar.... I don't like the symbol vec... because the arrow is inclined.

In a university textbook in English that I use are used the classic vector symbols both in bold and without bold. Obviously the space between the two lines seems to be the same and it does not increase.

Two images from my textbook:

There are two questions:

1) If I were to use for the vector symbols complete with mtpro2 could I have vectors both in bold and those without bold?

2) Is there a possibility of not increasing the space between lines when using the vectors like English textbook images?

Here there is my MWE:

documentclass[a4paper,12pt,fleqn]book
usepackage[utf8]inputenc
usepackagemathtools,amssymb,lipsum

begindocument

noindent
lipsum[1]
noindent 
$overrightarrowd$, $overrightarrowa$, lipsum[2]

enddocument 

and the output:

You can also see in the red rectangle that the arrow overlaps the character.

You can use the esvect package, which defines 8 possible arrow tips that you choose through an option:

Here is the result with the default (option d):

 documentclass[a4paper, 12pt, fleqn]book
 usepackage[utf8]inputenc
 usepackagemathtools,amssymb,lipsum
 usepackageesvect

 begindocument

 noindent
 lipsum[1]
 noindent
 $vvd$, $vva$, lipsum[2]

 enddocument 

Here is a way:

documentclass[a4paper,12pt,fleqn]book
usepackage[utf8]inputenc
usepackagebm
usepackagemathtools,amssymb,lipsum
newsaveboxmybox
newcommandmyVec[1]saveboxmyboxhboxensuremathoverrightarrow#1ensuremathoverrightarrow#1rule0ptdimexprhtmybox+3pt

begindocument
lipsum[1]
noindent$myVecfbmmyVeca$lipsum[1]
enddocument

But I can't really understand the "possibility of not increasing the line's spacing" and also don't let the arrows overlap the previous line... because for exapmle in your textbooks the technology could be so old that they was just added after the actual text and the author had created/changed his wording in order to not leave an arrow below a character that needs space below the "baseline".

Response to @Bernard's comment:

I prefer the usepackage[b]esvect option but I don't think it affects the mtpro2[lite] package; for the bold arrow it doesn't work. At the contrary, it only makes me the letter in bold.

documentclass[12pt]book 
usepackagenewtxtext
usepackage[utf8]inputenc
usepackagemathtools,amssymb,lipsum
usepackage[b]esvect
letBbbkrelax
usepackage[lite]mtpro2

begindocument
noindent
lipsum[1]
noindent
$vvd$, $vva$, $vvd$, $boldmathvva$,lipsum[2]
enddocument