recording level

Based on the doped energy-band diagram, the effect of the relative energy level of the deep trap center and its microcosmic optical parameter on holographic recording properties of doubly doped LiNbO_3 is analyzed theoretically.

结合掺杂能级图，理论分析了LiNbO3双掺杂晶体深陷阱中心能级的相对位置及其微观光学参量对全息记录性能的影响。

Conclusion Recording sound level meter can be well used to measure and assess noise exposure in complicate working environment.

结论个体噪声暴露测量可以较好地解决现场复杂情况下的噪声暴露评价问题。

But the production facilities are mostly of common level, the development of raw materials can. not match the development of the magnetic recording media and the domestic market has not been fully developed.

但生产设备多为一般水平，原材料的发展跟不上磁记录介质发展的需要，国内市场不大。

Methods SH-126 recording sound level meters were applied to measure noise exposure individually in two groups of air compressor operators for each workday. At same time working environmental noise levels in the two workshops were also measured using the sound level meter with traditional way.

方法采用SH126记录式声级计测量两组空压工在不同工作日内的噪声暴露，同时用声级计按经典方法在典型工作位多点测量噪声水平。

The experiments used a kind of fulgide photochromic material as the recording layer. Different combinations of the laser power and the write time were used with 4-level recording realized using high, medium, low and zero laser diode powers.

实验中采用俘精酸酐类光致变色材料作为记录层，使用不同的激光功率和写入时间的组合，由大、中、小3种幅值和零功率写入实现了4阶存储。

Magnetic Sound Recording Level

录音磁平