共查询到20条相似文献,搜索用时 15 毫秒
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爆破片应用范围和数量飞速发展,已从“传统型”的正拱型发展到了更安全可靠的反拱型。从而更有效地保护了设备和人员的安全。在爆破片领域里,美国BS&B公司的产品更符合国际安全标准。 相似文献
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文章论述了测定陶瓷原料中高含量钛、铁的实验方法。实验证明该方法测定误差小,测定速率高,对生产操作有一定的指导意义。 相似文献
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Oncocnemis chandleri, O. cibalis, andO. mackiei were attracted to chemically baited traps in the field. In all three cases, (5E,7Z)-dodecadienyl acetate was a key component for attraction. Attraction ofO. chandleri to traps baited with the (5E,7Z)-dodecadienyl acetate was inhibited by addition of (Z)-7-dodecenyl acetate.O. cibalis required both (5E,7Z)-dodecadienyl acetate and (Z)-7-dodecenyl acetate for attraction. Electroantennogram responses for the three species are also reported. 相似文献
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Electrowetting-on-dielectric (EWOD) devices have proven to be effective tools for precise microfluidic manipulation or in liquid lenses that surpass conventional solid lenses in versatility. However, the fabrication of these devices presents many challenges, such as their scalability or the growing concern on their environmental impact due to materials used in their fabrication. This review provides a comprehensive analysis of the materials currently used in the fabrication of EWOD devices and the characteristics they must meet. In addition, a discussion of future challenges in the fabrication of EWOD devices is presented, in particular the environmental problems presented by some of the materials currently in use. 相似文献
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化学推进剂及相关重要原材料发展回顾与展望 总被引:3,自引:2,他引:3
王新德 《化学推进剂与高分子材料》2010,8(3):1-7
回顾了化学推进剂及相关重要原材料的发展历程,对国外主要推进剂种类进行了评述。简介了液体推进剂4个重要发展阶段及相关主要品种,介绍了固体推进剂以黏合剂为主线的发展过程。指出了固体、液体推进剂的未来发展趋势为高能、钝感、低特征信号、低易损性、高密度比冲和相对环境友好。 相似文献