投影测量仪,金相分析仪,真空热处理炉,分齿机 英语怎么说.

投影测量仪 projection measuring instrument
金相分析仪 Metallographic Analyzer
真空热处理炉 Vacuum Heat Treatment Furnace
分齿机 gear machine (这个不肯定)

Projection measuring apparatus,
metallography analysis instrument,
vacuum heat-treatment furnace,
the tooth dividing machine