In scientific, it is necessary to accurately describe a material generally clear __, _ color __, _ density __._ melting point __, __ boiling point _, __, __ hardness __等几个方面的性质.对于直接制造物品的物质.我们一般要了解该材料的_导电性__,_导热性__,___弹性___,__延展性_,__硬度_, The properties of tensile strength. Chinese cooking cooking is not separated from iron pots. This is mainly to use iron _ heat conduction __ sex is better. Practice the mother's golden jewelry at home during the holidays to look at it. In the nature of several aspects, why use gold as a jewelry?
Gold: color: Golden density: very large melting point: very high solubility: 0 (insoluble in water) Good, poor elasticity, strong ductility.
The main reasons for making jewelry with gold: 1 The color is golden and dazzling, which is very beautiful. 2 Chemical properties are stable, not easy to rust, and are conducive to preservation. 3 Digitalability is good. Very easy to process and make various shapes.
I only know that the pot uses the iron conduction of iron . Because it is not oxidized in the air, it can be glossed forever and the value of gold is relatively noble. The color of the last gold is very beautiful
Why do jewelry use K gold? The reason is that K gold is not easy to break the coloring, distorted and deformation. It is not only aesthetic, but also has the effect of preservation.
In scientific, it is necessary to accurately describe a material generally clear __, _ color __, _ density __._ melting point __, __ boiling point _, __, __ hardness __等几个方面的性质.对于直接制造物品的物质.我们一般要了解该材料的_导电性__,_导热性__,___弹性___,__延展性_,__硬度_, The properties of tensile strength. Chinese cooking cooking is not separated from iron pots. This is mainly to use iron _ heat conduction __ sex is better. Practice the mother's golden jewelry at home during the holidays to look at it. In the nature of several aspects, why use gold as a jewelry?
Gold: color: Golden density: very large melting point: very high solubility: 0 (insoluble in water)
Good, poor elasticity, strong ductility.
The main reasons for making jewelry with gold: 1 The color is golden and dazzling, which is very beautiful. 2 Chemical properties are stable, not easy to rust, and are conducive to preservation. 3 Digitalability is good. Very easy to process and make various shapes.
I only know that the pot uses the iron conduction of iron
. Because it is not oxidized in the air, it can be glossed forever
and the value of gold is relatively noble. The color of the last gold is very beautiful
Why do jewelry use K gold?
The reason is that K gold is not easy to break the coloring, distorted and deformation. It is not only aesthetic, but also has the effect of preservation.
Not necessarily, there are gold, silver, and jadeite and other materials made
Because diamonds can not afford it