Researches were summarized about the principle of multi-wavelength multi-layer, storage system, construction of disk, process of read-write and future development.
对多波长多阶光存储的存储原理、存储系统和光盘结构、写入读出过程以及今后的研究方向进行了论述。
Some suggestions on the theory and practice in geometric scale up and construction design of rotating disk extraction columns have been presented.
通过设计与生产实践，对转盘式萃取塔的几何相似放大与结构设计方面的理论与实践，提出了探讨建议。
In construction machinery and equipment, contacting friction disk clutches are mostly used, by which the torque transferred cannot be adjusted easily and continually.
现有工程机械通常采用接触摩擦片式离合器，这种装置的传递扭矩难以实现无级连续调节。
In construction machinery and equipment, contacting friction disk clutches are mostly used, by which the torque transferred cannot be adjusted easily and continually.
现有工程机械通常采用接触摩擦片式离合器，这种装置的传递扭矩难以实现无级连续调节。
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