在防护罩表面开口透孔，且透孔宽度大于粉笔擦最大宽度。
A through hole is arranged on the surface of the hood. The width of the through hole is larger than the maximum width of a blackboard brush.
混凝土地坪的爆破拆除既可以用常规浅孔破碎法也可以用透孔法。
Both common shallow-hole blasting and through-hole blasting can be used for demolition of concrete ground.
透孔组织、网目组织、蜂巢组织、凸条组织等变化组织一直是织物外观模拟的难点之一。
Realistic imitation of appearance and patterns of fancy weaves such as mesh, mock leno, honey comb, pique stripe is a long-standing problem.
研究了湿法涂层技术制备聚氨酯多孔膜的工艺条件以及致孔剂含量对多孔膜微孔结构和透湿性能的影响。
The influences of coating condition and the content of pore-forming agent on the porous structure and the vapor permeation were studied.
接管和人孔的焊缝应为穿过容器壁的全熔透。
All welds for nozzles and manways shall be full penetration through the vessel wall.
接管和人孔的焊缝应为穿过容器壁的全熔透。
All welds for nozzles and manways shall be full penetration through the vessel wall.
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