lead borate glass meaning in English

硼酸铅玻璃
硼酸盐铅玻璃

In the present dissertation , some properties of sodium tellurite glasses , including density , chemical durability , stability against crystallization and fragility of glass forming liquid are studied . the melting , evaporation and solidification of sodium tellurite glasses in low gravity during drop shaft experiments are observed . except this , the phase - separation of lead borate glasses under different gravity condition is also studied
本文亚碲酸钠玻璃作为研究对象，系统探索了亚碲酸钠玻璃的熔化条件，化学稳定性，玻璃抗析晶能力以及玻璃形成液体的脆性等问题，着重研究了na _ 2o - teo _ 2玻璃在落塔实验中的熔化和气化以及pbo - b _ 2o _ 3玻璃在落塔实验中的分相，为解释玻璃在不同重力条件下的熔化和分相等现象提供了理论依据。