The addition of DTPA to the wash water not only will retard brightness loss resulted from transition metals, but also uphold the yellow shade.
洗涤用水中加入DTPA不仅避免了由于过渡金属离子的存在而带来的白度损失，而且可以减轻纸浆的黄色调。
The advantages of said invention are small energy loss of aiming beam, high brightness, convenient and rapid aiming observation, miniaturized equipment and convenient adjustment.
本发明具有瞄准光束的能量损耗小、亮度高，便于快速瞄准观察，整机小型化，调整方便等优点。
A small noise, power, brightness in the control of the low-loss high efficiency.
具有噪音小，功率大，在亮度控制范围内高效率低损耗。
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