AV天堂成人日韩在线,国产亚洲AV片一区二区四季,日本XXXX高清视频,国产精品免费看久久久麻豆,精品无人区无码乱码大片国产,91孕妇久久夜色精品国产爽爽,日本啊V不卡视频

產品用途：

利用具有相同間距的多層鉬片組成隔熱屏，為藍寶石單晶體的生長提供均勻穩(wěn)定的溫度場。最內層可以采用鎢片，以延長隔熱屏壽命。

Application:

Multilayer molybdenum sheets with the same spacing are used to form a heat insulation screen to provide a uniform and stable temperature field for the growth of sapphire single crystals. Tungsten sheet can be used for the innermost layer to prolong the service life of the heat shield.

按圖紙生產，如有特殊要求，雙方具體商定。

The products shall be manufactured according to the drawings.

Special requirements will be agreed upon by the supplier and buyer.