boiler lagging spacing piece 锅炉套间隔垫片
bed with w-shaped spacing piece w型隔板床身
pole piece spacing 磁极间隔
Pearly Piece Spacing 珠光体片间距
Thin space: A type spacing piece equal to one-fifth of an em.
薄空铅：相等于正方五分之一的活字间隔材料。
A spacing piece is arranged at the portion close to the back of the installation rod, and the outer edge of the spacing piece leans against the chassis outside the through-hole.
在安装条上靠近后端的部位设置限位片，该限位片的外边缘倚靠在通孔外的底座上。
The quantity and the length of embedded splice bar shall meet the design requirements and the related construction code. And the spacing tolerance of splice bar is not bigger than a piece of brick.
预埋拉结筋的数量、长度均应符合设计要求和施工规范的规定，留置间距偏差不超过一皮砖。
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