利用具有中间共振能级的无多普勒双光子相干选择激发来提高激光同位素分离的选择性和激发速率。
Selectivity and excitation rate of laser isotope separation can be enhanced by using the coherent selective Doppler-free two-photon excitation with intermediate resonant level.
提出一种运用基于盲源分离的共振解调技术对齿轮齿面接触故障进行诊断的方法。
A method using demodulated resonance technique based on blind source separation is developed for gear contact diagnosis.
油脂部分依次以石油醚、苯、氯仿、乙酸乙酯、丙酮、乙醇为淋洗剂进行洗脱，利用红外光谱、核磁共振光谱法对所分离组分进行了结构鉴定。
The compositions of grease were eluted with petroleum ether, benzene, chloroform, ethyl acetate, acetone, ethanol and characterized by means of IR and NMR spectroscopy.
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