谁能帮我翻译成英文？急着用！
谁能帮我翻译成英文？急着用！
取一只鸡蛋，洗去表面的油污，擦干。用毛笔蘸取醋酸，在蛋壳上写字。等醋酸蒸发后，把鸡蛋放在稀硫酸铜溶液里煮熟，待蛋冷却后剥去蛋壳，鸡蛋白上留下了蓝色或紫色的清晰字迹，而外壳却不留任何痕迹。
这是因为醋酸溶解蛋壳后能少量溶入蛋白。鸡蛋白是由氨基酸组成的球蛋白，它在弱酸性条件中发生水解，生成多肽等物质，这些物质中的肽键遇Cu2+发生络合反应，呈现蓝色或者紫色。
Marks Left on Egg White
Take a egg, wash away the oil on its surface and dry it. Wet a brush with acetic acid, and write on the shell. After the acid evaporated, cook the egg in a dilute copper sulfate solution. After the egg cools, strip off the eggshell. Now, clear blue or purple marks of writing are left on egg white, and not any traces of writing are left on the shell.
This is because a small amount of acetic acid can dissolve into egg white after it dissolves away the eggshell. Egg white is a globulin f it hydrolizes in weak acidic condition to generate peptides and other substances. The peptides go through complex reactions with Cu2+, resulting in the appearance of a blue or purple colour.
The production of &Water Rockets&
Equipment: mineral water bottle, pump, cycle valve, wire, rubber plug, water and so on. The construction of water rockets is as shown in the figure. Pour an appropriate amount of water into the bottle, plug in the plug and put the bottle on the launch pad. Fill the bottle with air using a pump, so that the pressure of gas on the top of the bottle becomes high enough. The high-pressure gas pushes the water and the plug out of the bottle, and the bottle itself to high altitudes.
......长见识了...
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第一句，你计划来中国几天？行程怎么安排？
翡翠原石:购买、加盟、批发-高货翡翠原石尽在鑫劦飞翡翠年代翡翠原石集团
还有一句，你自己来还是和女友？
Do you plan to come to China a few days? Travel arrangement how?Your own or your girlfriend?谷歌给出的结果
非常感谢啊
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