encrustation

Low-concentration SO2 flue gas is usually treated by Limestone-Gypsum desulfurization technology. However, this method has some disadvantages, such as requiring large investment, suffering serious encrustation, recontamination of wastes from the desulfurization process.

低浓度二氧化硫烟气一般采用石灰石-石膏法处理，但是该方法存在投资大、设备结垢严重、废弃物二次污染等问题。

The second set consisted of patina ― a chemical film encrustation on one of the limestone boxes.

第二套样本中包含有铜绿――在一个石灰石盒子上附着的一种化学物质。

The chemical roughening and chemical plating nano-silver were used for medical polyurethane stent catheters, and whose performances of anti-encrustation were tested and analyzed.

将化学法粗化和化学镀纳米银用于医用聚氨酯内支架导管，并且进行了动物体内防垢性能测试与分析。

They view the common market as a pearl surrounded by a dismal encrustation of European bureaucracy and regulation.

在他们看来，统一市场就如同被欧洲的官僚机构和法律规章所形成的一层硬壳包裹起来的一颗珍珠。