头盔以泡沫材料填充。
它们通常由乙烯基醋酸乙脂(EVA)泡沫或聚氨酯(PU)材料制成，很多情况还填充了空气或胶体。
It's generally made from ethyl vinyl acetate (EVA) foam or polyurethane (PU) and in many cases is supplemented by air or gel inserts.
采用空间回路网法计算得到填充吸波泡沫的碳纤维复合材料格栅结构的电磁散射性能。
The spatial network method is used to calculate the electromagnetic wave scattering characteristic of carbon fiber composite grid structures filled with Absorbing foams.
泡沫树脂是一种新型安全填充密闭材料。
Foaming resin is a kind of new seal-filling material used in mine safety.
本文建立模型分析中空填充网状聚氨酯泡沫材料抑爆原理，推导出燃油箱内混合气体燃烧反应终压计算公式。
Model for analyzing the explosion suppression mechanism of void design reticulated polyurethane foam for fuel tank was set up.
其目的是解决该材料的制备工艺和获得一种NTC性能稳定的特导炭黑填充PVC/EPR泡沫导电NTC材料。
The purpose is to improve the preparation process of the material and obtain the ultra-conductive carbon-black filled PVC/EPR foam conductive NTC material with stable NTC performance.
其目的是解决该材料的制备工艺和获得一种NTC性能稳定的特导炭黑填充PVC/EPR泡沫导电NTC材料。
The purpose is to improve the preparation process of the material and obtain the ultra-conductive carbon-black filled PVC/EPR foam conductive NTC material with stable NTC performance.
应用推荐