Testing of materials for semiconductor technology; determination of impurities in carrier gases and dopant gases; determination of C<(Index)1>-C<(Index)3>-hydrocarbons in nitrogen by gas-chromatography
半导体技术材料测试;载气和掺杂气体中杂质的测定;用气相色谱法测定氮中的C<(指数)1>-C<(指数)3>-碳氢化合物