polishing and grinding machine,twin /INDUSTRY-CHEM/
[DE] Glasschleif-und Poliermaschine; Zwillingsmaschine
[EN] polishing and grinding machine; twin
[FR] machine à polir et à doucir
twin,twin crystal,twinned crystal /INDUSTRY-CHEM,ENG-ELECTRICAL/
[DE] Doppelkristall; Kristallzwilling; Zwillingskristall
[EN] twin; twin crystal; twinned crystal
[FR] cristal jumeau; mâcle