机电专业英语第2版电子教案Unit 7

Unit 7 The Injection Molding and Machine

I. Lead in

Information related to the text

Do you know what is called an injection molding machine? Can you give an example of it? What does it work? In this unit you will learn some the Injection Molding and Machine concept, how it is wide application. Now, let's learn new words and phrases.

II. Word Study

1. inject [in'dʒekt]vt.注射，注入injection n.注射，投资，注射剂

1）A sterile applicator is used to inject the microchip just under the skin.

一个消过毒的涂药器被注射进微型芯片在表皮之下。

2）Major banks around the world are joining forces to inject as much as 180 billion dollars into global money markets.

全世界的主要银行都加入了抵制注入180亿美元到全球的经济市场中的行动。

3）Fire ants get their name because when they sting, they inject poison into the skin that causes a feeling of intense burning. Some people suffer

life-threatening reactions.

火蚁因当他们叮住目标时会将一种能导致灼热感的有毒物质注入皮肤而得名。有些还会有生命危险的反应。

4）There would be no need for injection, since the vaccine would be taken by mouth.

通过口服疫苗，我们就不需要注射了。

2. melt [melt] vt. 使软化，使融化，使熔化，使感动

1）This element is of proper shape and cross-section to carry rated current continuously and to melt in accordance with a specific time-current characteristic on heavy overload or short circuit.

此可熔断元件恰当的形状和横截面使其可连续通过额定电流，而对于严重过负荷或短路，按规定的时间一电流特性而熔断。

2）Either it exposes land, which then warms up; or it forms ponds (or lakes or streams) of meltwater on the surface of the ice, which absorb energy and melt more ice.

融冰过程要么导致陆地暴露并且温度升高，要么在冰层表面形成池塘（或湖泊，或溪流），并吸收能量，融化更多的冰。

3）Her money seemed to melt away in Paris.

在巴黎她的钱似乎自行消失了。

4）If fast growth and urbanization continue, some overcapacity will melt away.

如果高速增长和城市化进程得以持续，部分产能过剩将得到消化。

3. powdered ['paudəd] adj. 粉状的, 变成粉末的,涂粉的

1）The ground was lightly powdered with snow.

地上薄薄地铺了一层雪。

2）If you combine powdered milk and water, you get liquid milk.

把奶粉和水合在一起就成了牛奶。

3）Ceramic elements are made by pressing and sintering finely powdered materials.

陶瓷元件是将仔细研磨的材料经过加压和烧结制成。

4）The sweet scented orris root, is the powdered root of the Florentine iris, which was grown in ancient Greek and Roman gardens.

有香甜味的鸢尾根是佛罗伦萨鸢尾有许多小斑点的根，这种鸢尾长在古希腊和罗马花园里。

4. hopper ['hɔpə] n.斗；单足跳者；跳虫；漏斗

1）Raise hopper feeding inlet size and height.

加高投料口尺寸及投料高度。

2）Flexible tube used to convey either powder from hopper to gun or compressed air to gun.

把粉末从粉桶输送到喷枪或把压缩空气输送到喷枪的柔性管子。

3）Automatic material loading ty using vacuum blower and material hopper with photo electrical material level sensor.

配备电眼料斗与送料风机，能自动上料。

4）When the students left the examination room, they jotted down these questions quickly from memory and put them into the fraternity hopper.

学生离开考场后，凭记忆迅速将这些问题写下来，然后存入联谊会的议案箱。

5. screw [skru:] vt.旋，拧；压榨；强迫n..螺丝钉；螺旋vi. 转动，拧

1）Can you work the screw loose?

你能使这个螺钉松开吗？

2）John must have a screw loose to quit such a good job.

约翰辞掉这么好的工作，一定是神经不正常。

3）This eyelet is so small that even the smallest screw cannot pass through.

这个孔眼太小了，最小的螺丝钉都穿不过去。

4）He is an old screw. You will never be able to make him give out one dollar.