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coi coite
starrsinnig

в PONS речника

английски
английски
немски
немски

re·frac·tory [rɪˈfræktəri, Am -ɚi] ПРИЛ

1. refractory (stubborn):

refractory person
refractory person
refractory disease

2. refractory МЕД:

refractory disease
refraktär fachspr
refractory disease

3. refractory (heat-resistant):

refractory brick, clay
refractory metal
немски
немски
английски
английски
refractory
Refraktärmetall СЪЩ ср ХИМ
refractory metal

"Биология"

refractory period [rɪˌfræktərɪˈpɪərɪəd] СЪЩ

refractory period

PONS OpenDict

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едноезични примери (не са проверени от PONS редакцията)

A removable refractory plug allowing access to the tunnel was added in the back of the unit.
en.wikipedia.org
There are more than twenty deposits of refractory and fireclay.
en.wikipedia.org
The duration of the refractory period varies considerably, even for a given individual.
en.wikipedia.org
Refractory bricks are typically replaced every five years, because thermal fatigue gradually introduces fissures that reduce the insulating strength.
en.wikipedia.org
Standard shapes have dimension that are conformed by most refractory manufacturers and are generally applicable to kilns or furnaces of the same types.
en.wikipedia.org

Примери от интернет (не са проверени от PONS редакцията)

[...]
Advanced oxidation processes are particularly appropriate for effluents containing refractory, toxic or non-biodegradable materials.
[...]
www.lenntech.de
[...]
Weiterentwickelte chemische Oxidationsprozesse sind speziell für Abwässer geeignet, die besonders hartnäckige, giftige oder nicht-biologisch abbaubare Inhaltsstoffe enthalten.
[...]