The chemical etching method wa applied to form surface texture of multicrystalline silicon in order to reduce the reflectance of the surface.

为了降低光在多晶硅表面的反射，采用化学腐蚀法在其表面制备了绒面。

youdao

WA 8525 has slightly pull up effect power. So it can be added to oils in order to improve the closing and feel.

WA 8525有轻微变色，故能添加入油脂组份里，增强其封闭性，改善手感。

youdao

In Malawi nearly 20 protesters died at the hands of Bingu wa Mutharika's riot police last month - how will we deal with him should he order more killings?

BBC: African viewpoint: Caged comeuppance?