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美国ＢａｌＳｅａｌＥｎ -ｇｉｎｅｅｒｉｎｇ公司为满足复杂的防护需要 ,设计出了一种ＥＭＩ/ＲＦＩ弹簧垫圈 ,并获得了专利。这种带有倾斜角度的簧圈和荷载近乎稳定的弹簧(垫圈 )被有来取代那些要求严格的军用和民用弹性体制品。它在 18千兆赫的情况下 ,可使衰减率达到 82分
American BalSealEn-engineering company to meet the complex protection needs, has designed a EMI / RFI spring washers, and patented. This tilting coil and nearly loaded spring (washer) are used to replace those demanding military and civilian elastomers. It achieves a decay rate of 82 points at 18 GHz