"Noise emission" means emission of noise from the source to the living environment of the neighbourhood.

“噪声排放”是指噪声源向周围生活环境辐射噪声。

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The noise emission can be also controlled in this way in high frequency range (Fig. 11 and Fig. 12).

在高频范围的噪声辐射也可通过此方法控制（图11和图12）。

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This value basis, as per the standardization, exclusively on the pure noise emission of the gearbox in an enclosed area measured with 1m distance.

本数值基础，是按照标准化，在封闭空间内1米的距离仅仅针对变速箱纯噪声的排放进行测试的。

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It also has to meet the noise and emission standards.

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However, emerging markets pose some regulatory hurdles such as lack of access to highways for motorcycles, emission standards and noise limitations.

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