以下为句子列表：
英文: 4 High lead and high tin copper alloy powders: 24-1，7-7-3，10-10 etc. Apparent density and particle size distribution is adjustable.
中文: 轴瓦材料用的高铅、高锡铜合金粉：24-1，7-7-3，10-10等；松比可调，粒度分布可调。
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英文: A deformational particle with oil-soluable property is used as a bridge plug to build a shielding layer in the oil-gas reservior channel, to prevent the pollution caused by drilling mud entering the reservior due to the pressure difference, and so to prot
中文: 摘要用一种具有油溶性质的可变形粒子做桥塞物，在油气储层通道中建立桥堵屏蔽层，防止由于压差造成钻井泥浆进入储层而形成污染，从而起到保护油气储层的作用。
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英文: A formula is proposed for calculating the sand content of different size in the case of matching particle size of sand, thus obtaining the correlation between ultrasonic attenuation and density of solid particles in the pulp, as well as particle size.
中文: 提出了在矿砂粒径尺寸级配情况下的不同粒径时的矿砂含量的公式，并由此得到了超声波衰减与矿浆中固体颗粒浓度、粒度之间的关系。
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英文: A hypothetical particle postulated to be the quantum of gravitational interaction and presumed to have an indefinitely long lifetime, zero electric charge, and zero rest mass.
中文: 引力微子一种假想粒子，被假定为引力相互作用的量子，并被推测为具有无限长寿命、零电荷和零静止质量
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英文: [Results] The bacteria numbers of the PAc peptide microparticle group were (13.2±8.16)×104 CFU/ml and the Keyes scores were 31.8±6.77. Both were significantly lower than those of the control group(P< 0.01).
中文: 【结果】PAc多肽抗原微球疫苗口服组的变形链球菌数为(13.2±8.16)×104CFU/ml; 磨牙龋齿Keyes计分为31.8±6.77,均显著低于对照组(P<0.01)。
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