1. It has been found that carburetting with graphite can efficiently prevent the surface crack of cast iron. 研究还证明,用石墨增碳可以有效地改善激光熔化区和合金化区的组织和性能,并且有效地防止裂纹的产生。 2. 2. Graphite: It is made of the high pure and super fine graphite which is treated...
The pencil is made of wood and graphite. We can use it to write. What is the material of the pencil? A. iron B. wood C. plastic D. gold 相关知识点: 试题来源: 解析 B。铅笔是由木头和石墨制成的,题干中“pencil is made of wood and graphite”,所以答案是 wood。
Expandable graphite, also known as flexible graphite, is made of high-quality natural flake graphite, which is processed by high temperature and scaly into worm-like shape. The volume can be expanded by 100-400 times. This expanded graphite still retains the properties of natural graphite...
Mold made of cast iron with spheroidal graphite or is made of cast steelVINCENT DR.-ING. AUGUST
It is a writing tool. It is usually made of wood and has a graphite core. It can be sharpened easily. What is it? A. Pencil B. Pen C. Marker D. Crayon 相关知识点: 试题来源: 解析 A。解析:题干描述这个书写工具通常由木头制成,有石墨芯且容易削尖,pencil(铅笔)符合这些特点,pen(钢笔)...
百度试题 结果1 题目The core of a pencil is made out of graphite and clay, not lead.A.FB.O 相关知识点: 试题来源: 解析 A 反馈 收藏
Graphite paper: It is made of high-carbon phosphor flake graphite by chemical treatment and high-temperature expansion rolling. It overcomes the shortcomings of brittleness, loose and porous, full of elasticity, and works under high temperature, high pressure or radiation conditions, ...
graphite crucible is made of fine raw material and added anti-oxidation elements, having properties such as: 1) thermal sta1bility: according to the heat shock working condition of graphite crucible, we make special design s to guarantee the quality of product. 2) erosion resisting: uniform an...
The natural high carbon flake graphite is made by chemical treatment and rolled by high temperature expansion. The expanded graphite roll does not contain binder and filler. Therefore, it has high purity, good corrosion resistance, radioactive resistance, high / low temperature resistance, low creep...
named Cai Lun. For over 500 years paper was made only in China. People in Japan learned of paper around the year 600. As years went by, people in other places began to make paper. The lead(铅)pencil is not made of lead. It is made of graphite(石墨). People fou 纸在105首先被做...