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- Harden up a little, we need more speed. 把帆索拉紧一点,我们需要加快速度。
- The chemical symbol for copper is "Cu". 铜的化学符号是Cu。
- What color is copper sulphate solution? 硫酸铜溶液是什么颜色?
- Hot steel is quenched to harden it. 烧热的钢淬火使它坚硬。
- The varnish takes a few minutes to harden. 清漆几分钟就能变硬。
- Copper and gold are both metals. 铜和金都是金属。
- Copper has less resistance than lead. 铜的电阻比铅的小。
- What color is copper sulfate solution? 硫酸铜溶液是什么颜色?
- Don't harden your heart against him. 别对他硬心肠。
- A copper coin formerly used in India and Pakistan. 安那旧时在印度和巴基斯坦使用的铜币
- Ornamental copper pans hung on the wall. 墙上挂着装饰性的铜盘。
- This mountain road leads to the copper mine. 这条山路通向那个铜矿。
- Brass is an alloy of copper and zinc. 黄铜是铜和锌的合金。
- We fuse copper and tin to make bronze. 我们把铜和锡熔制成青铜。
- They will mine copper there in the valley. 他们将在那边的山谷开采铜矿。
- Please harden in the main ropes, the sail's not tight enough! 请把主要的绳索拉紧些,帆扯得不够紧!
- Brass is formed by the fusion of copper and zinc. 黄铜是由铜和锌熔合制成的。
- Anneal means make harden steel soft and remove brittleness. 退火就是使淬火钢变软并消除其脆性。
- Copper conducts electricity better than iron does. 铜的导电性比铁强。
- Able to set and harden under water, as Portland cement. 在水中变硬的能在水下定型并变硬的,如波特兰水泥