Not careful case in water, can be called a silica particulate matter and have water quartz watch Together into a closed container, a few hours later, remove the quartz watch, water is all disappeared.
不小心表壳内进水了，可用一种叫做硅胶的颗粒状物质与已经积水的石英表一起放进一个密闭的容器内，数小时后，取出石英表，积水即全部消失。
Project Outline: Quartz crucible which is used for semiconductor material is the container necessary to the production of monocrystalline silicon.
项目建设背景：半导体材料用石英坩埚，是生产硅单晶体所必需的石英容器。
Project Outline: Quartz crucible which is used for semiconductor material is the container necessary to the production of monocrystalline silicon.
项目建设背景：半导体材料用石英坩埚，是生产硅单晶体所必需的石英容器。
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