• The valve seat must be machined in ( or on ) a lathe .
• Only one spindle at a time will be operated on this machine ( or machine-tool ).
• The valve seat must be machined in ( or on ) a lathe .
• Only one spindle at a time will be operated on this machine ( or machine-tool ).
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012