牙石

P: How to remove the dental calculus and odontolith?

病人：怎样除去牙垢和牙石呢？

If the crevice between teeth is getting bigger and explain oneself have a tooth disease for week, and the gum atrophiesed and increased wide illusion by crevice between teeth for person after cleaning tartar.

如果牙缝大了，说明本身就有牙周病，而且牙龈萎缩了，去除牙石后给人以牙缝增宽的错觉。

If while brushing teeth or eating, appear the phenomenon of gum issue of blood, early cause a value, because this is the tooth, week has the performance to blaze a disease, should as early as possible arrive hospital to make a diagnosis and give treatment and look into the tartar circumstance in gums, and the gum atrophies of circumstance.

如果在刷牙或吃东西的时候，出现牙龈出血的现象，要及早引起重视，因为这是牙周有炎症的表现，应尽早到医院诊治，查看龈下牙石情况，以及牙龈萎缩的情况。

The stone can be manufactured as handworked kerb, construction slab, paving stone, square stone, park decorate etc.

其石材可加工各种规格的大板，工程板，路牙石，广场贴面，公园装饰，条板，光板，火烧板，荔枝板等系列产品。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。