以下为句子列表：
英文: Based on the penetrability of powder loads, the relative parameters affecting characteristics of gun propellant for powder loads were studied.
中文: 摘要以射钉穿透能力为依据，对影响射钉弹发射药性能相关参数进行了试验研究。
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英文: Characters and features: red powders, fine particle, in good dispersancy, good impenetrability to ultraviolet ray, stable in atmosphere and sunlight, good light resistance, good thermal endurance, good alkali resistance, dissolved only in hot strong acid.
中文: 性状特点：为红色粉末，粉粒细腻，分散性良好，对紫外线有良好的不穿透性，在大气和日光中较稳定其耐光、耐热和耐碱性良好，仅溶于热的强酸中。
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英文: High frequency has strong penetrability While unavoidably using caustic, combustible and explosive liquor or cleaning fine work-piece, the workpiece could be put into a beaker which is then put into the cleaning trough.
中文: 高频具有很强的穿透性，对于不可避免的使用腐蚀性溶液、易燃易爆溶液或清洗细小物件，可以放在烧怀中再置于清洗槽内进行。
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英文: The results show that the penetrability of powder loads can be improved when suitably reducing bulk density and grain size of gun propellant, increasing nitrogen content of NC and choosing oblate spheroid explosive respectively under the constant test con
中文: 结果表明，在其它试验条件不变的条件下，适当降低发射药堆积密度、适当提高发射药中硝化棉(NC)含氮量、选用恒面燃烧的扁型药、降低发射药粒度均有利于提高射钉的穿透能力。
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英文: This paper provided wood modification method to improve the properties of the wood such as penetrability and rigidity.
中文: 提出了改善木材渗透性能、提高木材硬度等纳米改性方案。
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