Snow tires fine groove more in at least 1000 or more, there are about 200 common tyres.

雪地胎细小沟槽较多至少在1000个以上，普通胎大约有200个。

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There was a hole in the center of and a fine spiral groove that is a continuous spiralling line of closely written characters.

在中心有一个洞和精细的螺旋刻纹，是近乎书写状连续螺线。

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When the soil is fine, throw earth on the groove side (or material) 0.8m away from the pit (groove) edge with height more than 1m.

当土质良好时，抛于槽边的土方（或材料），应距槽（沟）边缘0．8m以外，高度不宜超过1m。

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When the soil is fine, throw earth on the groove side (or material) 0.8m away from the pit (groove) edge with height more than 1m.

当土质良好时，抛于槽边的土方（或材料），应距槽（沟）边缘0．8m以外，高度不宜超过1m。

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