"irreplaceable source" is a correct phrase in written English.
It can be used when referring to a person, thing, or resource that is extremely valuable and cannot be substituted or replicated. Example: The library's collection of ancient manuscripts is an irreplaceable source for historians studying medieval literature.
Dr. Floersheimer, who received an honorary doctorate in humanities from Yeshiva University, was an irreplaceable source of guidance, inspiration, direction and insight.
The list also includes Hydro Quebec, the Canadian company whose hydroelectric dams are a "critical, irreplaceable source of power to portions of Northeast U.S.," as the cable says.
Although manufacturing now accounts for only about a seventh of G.D.P., it remains the sector most attuned to the economic cycle; it is an irreplaceable source of innovation and exports; and it has great symbolic importance.
But it could, in a broad way, be interpreted as siding with Husserl, Ludwig and Searle in thinking of consciousness as the irreplaceable source of intentionality and meaning.
I spoke to a young man called Max Brooks* – imprisoned for offences including graffiti, drug possession, robbery and unlawful wounding – who says his probation officers have been an irreplaceable source of support for him.
The 190 countries -- including the DRC -- that have pledged to adhere to the World Heritage Conventions have an obligation to speak up now and enforce the commitment made 35 years ago to protect Virunga, an "irreplaceable source of life and inspiration... that belongs to all the peoples of the world".
Natural products from higher fungi origin are irreplaceable sources of architecturally distinct scaffolds for drug discovery [1, 2].
There's a constant hysteria in the land about threats to the Constitution, to religion, to strategic territory with irreplaceable sources of water or raw materials sold to secret American or Israeli companies.
Mr. Dolin said the message for today was that one era's irreplaceable energy source could be the next one's relic.
Eric Jay Dolin, who wrote some of the text for an exhibit at the Sag Harbor Whaling and Historical Museum, says the message for today is that one era's irreplaceable energy source can be the next one's relic.
The main constraint of wireless sensor networks (WSNs) is the limited and generally irreplaceable power source of the sensor nodes.
