燃料としては石油が石炭に代わりつつあった。

Sentence Analyzer

English Translation

Petroleum was replacing coal as fuel.

Furigana

燃料(ねんりょう)としては石油(せきゆ)が石炭(せきたん)に代(か)わりつつあった。

Romanji

Nenryō toshite wa sekiyu ga sekitan ni kawari tsutsu atta.

Words

燃料 (ねんりょう)

fuel

として (として)

as (i.e. in the role of); for (i.e. from the viewpoint of); apart from... (used to change the topic); even (e.g. "not even a single person"); thinking that...; trying to...

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

石油 (せきゆ)

oil; petroleum; kerosene

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

石炭 (せきたん、いしずみ)

coal

に (に)

at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although

替わる (かわる)

to succeed; to relieve; to replace; to take the place of; to substitute for; to take over for; to represent; to be exchanged; to change (places with); to switch

つつ (つつ)

while; even though; despite

有る (ある)

to be (usu. of inanimate objects); to exist; to live; to have; to be located; to be equipped with; to happen; to come about