Kućište ima štampanu ploču; štaviše, ima opasnu materiju.

They are both in the accusative singular.

Why? Because they are the direct objects of ima (has). In Serbian, the verb imati normally takes a direct object in the accusative:

• Kućište ima štampanu ploču.
• Kućište ima opasnu materiju.

So the sentence structure is basically:

• subject: kućište
• verb: ima
• direct object: štampanu ploču / opasnu materiju

Because adjectives in Serbian must agree with the noun they describe in:

• gender
• number
• case

Here:

• ploča is feminine singular
• materija is feminine singular

Since both nouns are in the accusative singular, the adjectives also take the feminine accusative singular ending:

• štampana ploča → štampanu ploču
• opasna materija → opasnu materiju

So both the adjective and the noun change together.

Kućište usually means housing, casing, enclosure, or outer shell, depending on context.

It is a neuter noun. In its dictionary form, it ends in -e, which is a very common neuter ending in Serbian:

• kućište = nominative singular
• gender: neuter

In this sentence, kućište is the subject, so it stays in the nominative.

Here ima means has or contains.

It is the 3rd person singular present tense of imati (to have):

• ja imam = I have
• ti imaš = you have
• on/ona/ono ima = he/she/it has

Because kućište is singular, we use ima.

In technical or descriptive contexts, ima can often sound like contains in English:

• Kućište ima štampanu ploču = The casing has / contains a printed board.

Because Serbian does not have articles like English a/an and the.

So a noun like kućište can mean:

• a casing
• the casing

and the exact meaning depends on the context.

The same is true for:

• štampanu ploču = a/the printed board
• opasnu materiju = a/the dangerous substance

English needs articles; Serbian usually does not.

Yes, here it is one word: štaviše.

It means something like:

• moreover
• what is more
• furthermore
• sometimes indeed or in fact, depending on context

It is a connecting adverb/discourse marker used to add something even stronger or more important than the first statement.

So:

• Kućište ima štampanu ploču; štaviše, ima opasnu materiju.

means the second clause is not just another fact, but an extra, stronger point.

The semicolon separates two closely related independent clauses:

• Kućište ima štampanu ploču
• štaviše, ima opasnu materiju

They are strongly connected in meaning, so a semicolon works well.

The comma after štaviše is used because štaviše functions like an inserted linking word, similar to English:

• Moreover, ...
• Furthermore, ...

So the punctuation is doing almost the same job it would do in English.

Because Serbian often omits a repeated subject when it is already clear from context.

So after:

• Kućište ima štampanu ploču

the next clause can simply say:

• štaviše, ima opasnu materiju

and the listener understands that the subject is still kućište.

This is very natural in Serbian. English often repeats the subject more explicitly, but Serbian does not always need to.

Yes, it can be.

Literally, štampana ploča means printed board/plate, and in technical contexts it is often used for a printed circuit board. You may also see:

• štampana pločica
• English-based terms like PCB in specialized contexts

So if you are reading technical Serbian, štampana ploča is a perfectly plausible term.

Because materija and materijal are not exactly the same.

• materija = matter, substance
• materijal = material, often in the sense of a physical material used to make something

In safety or technical language, opasna materija usually means dangerous substance or hazardous substance, which fits this sentence well.

So:

• opasna materija = dangerous substance
• opasan materijal would suggest something slightly different, more like dangerous material

A rough English-friendly pronunciation would be:

• kućište ≈ KOO-cheesh-teh
• štaviše ≈ SHTA-vee-sheh

A few letter tips:

• š = sh as in shoe
• č = a harder ch sound, roughly like church
• ć = a softer sound than č; English does not have an exact equivalent, but it is often approximated as a softer ch

So in kućište, the ć is softer than the č in words like čaj.

Yes. Sadrži means contains, and it can sound more precise or technical.

Compare:

• Kućište ima štampanu ploču. = The casing has a printed board.
• Kućište sadrži štampanu ploču. = The casing contains a printed board.

Both are possible, but ima is very common and natural, especially in plain description. Sadrži can sound a bit more formal or technical.

The word order is fairly neutral and standard.

• Kućište comes first as the topic/subject.
• ima follows as the verb.
• the object comes after that.

This is a normal, clear order for a descriptive sentence.

The main extra emphasis comes from štaviše, which tells you that the second statement strengthens the point:

• it has a printed board;
• moreover, it has a dangerous substance.