The polypropylene fiber can effectively control the length, width and number of the drying shrinkage crack of early-age concrete.
聚丙烯纤维可有效控制混凝土早期干缩裂缝的长度、宽度和数量。
It is important to control optical fiber's surplus length and diameter in the course of optical fiber secondary coating.
在光纤二次套塑生产过程中对光纤余长和直径的控制尤为重要。
The operation principle of automatic cotton fiber length-gage XJ107, design envisage of its control system as well as its realization method are introduced.
介绍了XJ107型棉纤维自动测长仪的工作原理、控制系统的设计构想及实现方法。
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