Nota sehpasındaki partisyonda ölçü çizgisi gösterildi.

Sehpasındaki means something like the one on the stand or the one that is on the stand, depending on context.

It can be broken down like this:

• sehpa = stand, table, rack
• sehpası = its stand / stand of ...
  In nota sehpası, this is a common Turkish noun compound meaning music stand
• sehpasında = on/in/at the music stand
• sehpasındaki = the one that is on the music stand

So nota sehpasındaki partisyonda means in the score that is on the music stand.

The ending -ki often turns a location expression into something adjective-like:

• masada = on the table
• masadaki kitap = the book on the table

So here:

• nota sehpasındaki partisyon = the score on the music stand

Because Turkish often uses a noun compound where English might use two nouns together.

• nota = note, sheet music
• sehpa = stand

In Turkish, compounds like this usually take a possessive-looking ending on the second noun:

• nota sehpası = music stand

This pattern is very common:

• kitap kapağı = book cover
• araba kapısı = car door
• okul bahçesi = school garden

So nota sehpası is the normal compound form, not nota sehpa.

Because the Turkish locative ending -da / -de / -ta / -te covers several location meanings that English separates.

So partisyonda can mean:

• in the score
• sometimes on the score, depending on context

And sehpasında can mean:

• on the stand
• at the stand

Turkish does not force the same distinction English does. The exact English preposition depends on the noun and the context.

Partisyonda is the location phrase for where the thing was shown.

Breakdown:

• partisyon = score, partition, full musical score
• partisyonda = in the score

So the sentence says that the ölçü çizgisi was shown in the score.

Together with the earlier modifier, it becomes:

• nota sehpasındaki partisyonda = in the score on the music stand

Literally, it means measure line.

• ölçü = measure
• çizgi = line
• ölçü çizgisi = bar line / measure line

This is another Turkish noun compound:

• the second noun gets the compound ending
• çizgi becomes çizgisi

So:

• ölçü çizgisi = the line marking the measure

In music terminology, this is usually bar line in English.

Because gösterildi means was shown or was displayed, not showed.

Breakdown:

• göster- = to show
• -il- = passive marker
• -di = past tense

So:

• gösterdi = showed
• gösterildi = was shown

The sentence focuses on ölçü çizgisi as the thing being shown, not on who showed it.

That is very normal in Turkish, especially in descriptions, instructions, textbooks, captions, and formal writing.

Because Turkish normally puts the finite verb at the end.

This is one of the basic word-order patterns of Turkish:

• subject/object/location information first
• verb last

So:

• Nota sehpasındaki partisyonda = in the score on the music stand
• ölçü çizgisi = bar line
• gösterildi = was shown

A very literal English-style order would be something like:

• In the score on the music stand, the bar line was shown

That is why the Turkish sentence ends with gösterildi.

Yes. In this sentence, ölçü çizgisi is the grammatical subject.

Even though the verb is passive, Turkish still treats the thing affected by the action as the subject:

• Ölçü çizgisi gösterildi = The bar line was shown

So the basic structure is:

• [location] + [subject] + [passive verb]

Here:

• nota sehpasındaki partisyonda = location
• ölçü çizgisi = subject
• gösterildi = passive verb

Yes, that is a good close translation.

A more structural breakdown is:

• nota sehpasındaki = on the music stand / that is on the music stand
• partisyonda = in the score
• ölçü çizgisi = bar line
• gösterildi = was shown

So the full meaning is:

• The bar line was shown in the score on the music stand

Depending on context, English might also say:

• A bar line was shown in the score on the music stand
• The bar line was displayed in the score on the music stand

Turkish does not use articles like a and the, so the exact English choice depends on context.

Because Turkish does not have definite and indefinite articles like English the and a/an.

Instead, definiteness is often understood from:

• context
• word order
• case marking
• whether the noun refers to a known or specific thing

So ölçü çizgisi could be translated as:

• the bar line
• a bar line

But in a sentence like this, English often prefers the bar line because it sounds like a specific item being identified or displayed.

The ending -ki often attaches to a word or phrase and turns it into something like the one in/on/at... or that is in/on/at...

Examples:

• odada = in the room

• odadaki masa = the table in the room

• çantada = in the bag

• çantadaki kalem = the pen in the bag

• nota sehpasında = on the music stand
• nota sehpasındaki partisyon = the score on the music stand

So in your sentence, -ki helps connect music stand to score:

• not just any score
• specifically the score on the music stand

Because partisyonda is the location phrase by itself: in the score.

If you said partisyondaki, it would need to modify another noun:

• partisyondaki işaret = the symbol in the score
• partisyondaki ölçü çizgisi = the bar line in the score

But in your sentence, the noun being modified is already earlier:

• nota sehpasındaki modifies partisyon
• then partisyonda gives the location for where the bar line was shown

So:

• nota sehpasındaki partisyon = the score on the music stand
• nota sehpasındaki partisyonda = in the score on the music stand

Yes:

• nota = note, sheet music
• nota sehpası = music stand
• nota sehpasındaki = on the music stand / that is on the music stand
• partisyon = score
• nota sehpasındaki partisyon = the score on the music stand
• partisyonda = in the score
• ölçü çizgisi = bar line
• gösterildi = was shown

So the full sentence structure is:

• [Nota sehpasındaki partisyonda] [ölçü çizgisi] [gösterildi].
• [In the score on the music stand] [the bar line] [was shown].

This is a very typical Turkish structure: location first, then the main noun, then the verb at the end.