Grass and clover seed should be sown at a depth of 12-20mm.

禾木科草和三叶草播种深度应为12 - 20毫米。

youdao

The optimum glazing spacing for thermal insulation is about 15-20mm.

对于保温隔热来讲， 最适宜的玻璃间距是15-20毫米。

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It was then discovered I did, in fact, have a 20mm adenoma on my lower left parathyroid gland.

后来，在我左下的甲状旁腺上发现了一个20毫米的腺瘤。

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Some (Lenovo IdeaPad Yoga) clock in at 14mm and others with more features range up to 20mm (HP Envy 14 Spectre).

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Shipping with either a black or white neoprene strap, there are a number of other color choices for the 20mm wide band.

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