| 摘要 |
PCT No. PCT/DE93/01000 Sec. 371 Date Jul. 29, 1996 Sec. 102(e) Date Jul. 29, 1996 PCT Filed Oct. 20, 1993 PCT Pub. No. WO95/11444 PCT Pub. Date Apr. 27, 1995A hollow vacuum-tight shaped body made of ceramic material for measuring transmission and absorption of electromagnetic radiation in liquids and gases is characterized by the fact that the ceramic material consists principally of Al2O3 and has one or a plurality of apertures of any size, which are permanently and integrally closed by a material which is permeable to electromagnetic radiation in the wavelength range from 180 nm to 5.5 mu m. |
