Dense sands like olivine are also resistant to weathering, allowing it to endure millennia of constant waves. (Magnification 110x).

像橄榄石这样的密砂能够抵抗风化，所以能够经受常年不断的潮汐拍打。

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The magnification change has no influence on boundary frequency while the nonlinearity of damping, time constant and pure time delay are its main influencing factors.

放大倍数不改变系统的分界频率，但阻尼大小、时间常数和纯延时等非线性环节是影响分界频率的主要因素。

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