The invention relates to an acaricide composition and the effective ingredient of the acaricide composition comprises tebufenpyrad and fenbutatin oxide in a mass ratio of 50:1 to 1:80.

本发明涉及一种杀螨组合物，该组合物有效成分由吡螨胺和苯丁锡组成， 吡螨胺和苯丁锡的质量比为50∶1～1∶80。

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Through model tests, it has been found that the effective mass coefficient for the soil is around 0.2 for artificial islands with height-to-diameter ratio being smaller than 1/3.

地震时人工岛内回填土只有一部分有效质量参与地震响应，通过模型试验，高径比小于1/3的人工岛回填土有效质量系数在0.2左右。

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For example saturation density, bulk binding energy, symmetry energy coefficient, incompressibility, and the ratio of effective nucleon mass to free nucleon mass at the saturation density.

比如饱和密度，结合能，不可压缩模量，对称能系数，以及饱和密度时的核子有效质量与核子自由质量的比值。

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