The sulphuric acid ate into the parts of the metal where the coat of paint had peeled.

蚀了这块金属上涂层剥落的地方。

By the carbonification degree in the concentrated sulphuric acid, the mineral wax, such as paraffin wax added can be determined.

根据蜂蜡中的烃类浓中可被炭，加入的石蜡等矿物蜡不被炭来测定此类掺杂物。

Introduces the structure, characteristics of LGQ type gauger, and the situation of measuring water and sulphuric acid in SSP production.

介绍LGQ型计量器的结构、性能，以及过磷钙生产中用于水和计量的情况。

It has discovered that trace dimethyl glyoxime can sensitivly catalyize the discoloration of dimethyl yelloue by potassium bromate in sulphuric acid.

研究发，介质中，超痕量二甲基乙二醛肟能灵敏地加速溴钾氧二甲基黄褪色的指示反应。