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| Subject | English | German |
| opt. | heat filter | Wärmefilter (placed in front of a lamp to protect condenser systems, interference filters etc.) |
| opt. | heat filter | Wärmeschutzfilter (placed in front of a lamp to protect condenser systems, interference filters etc.) |
| tech. | heat filter | Wärmefilter |
| earth.sc., industr., construct. | heat filter | Waermeschutzfilter |
| meas.inst. | heat filter | Wärmeschutzfilter |
| opt. | heat filter | Waermefilter |
| opt. | heat-absorbing filter | Wärmeschutzfilter (placed in front of a lamp to protect condenser systems, interference filters etc.) |
| microsc. | heat-absorbing filter | Wärmeschutzfilter |
| opt. | heat-absorbing filter | Wärmefilter (placed in front of a lamp to protect condenser systems, interference filters etc.) |
| earth.sc., industr., construct. | heat-absorbing filter | Waermeschutzfilter |
| opt. | heat-absorbing filter glass | Wärmeschutzfilter |
| opt. | heat-absorbing filter glass | Wärmefilter |
| phys. | heat-reflecting filter | Wärmeschutzfilter |