• Extra low-temperature enamels are under development ( or are being developed ).
• The processes are still under development .
• Extra low-temperature enamels are under development ( or are being developed ).
• The processes are still under development .
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012