They believe this characterizes a technique of painting that USES a glaze, or very thin layer, to build up shadows in the face.

他们认为这是使用釉料或者很薄的涂层来绘制脸部明暗这个艺术技巧的特征。

youdao

Then da Vinci applied up to 30 incredibly thin strokes of glaze above the flesh tone—many just a few micrometres thick.

接着使用非常薄的釉料刷在基本色调上，最多可达30次，许多釉料层只有几微米厚。

youdao

Ding Kiln is a famous kiln in Song Dynasty. Product Characteristics: burning white china mainly, fine porcelain, quality thin with bright, glaze color moist like jade.

宋代名窑，产品特点：以烧白瓷为主，瓷质细腻，质薄有光，釉色润泽如玉。

youdao

Fires had been set to clear the spring stubble, and a thin glaze of smoke hung over the road in a steady cloud.

NEWYORKER: The Reptile Garden

By applying many thin coats of this adapted glaze, he achieved the smoky shadowing he became famous for.

ECONOMIST: The da Vinci method

Sotheby's said the bowl is a "remarkable and exceptionally beautiful example of Song pottery, celebrated for its thin potting, fine near-white body and ivory coloured glaze".

BBC: NY garage $3-bowl sells for $2.2m at auction