jackscrew

/ˈdʒækˌskruː/

Meanings

noun

螺旋千斤顶，丝杠千斤顶

A jack (mechanical lifting device) which is operated by turning a leadscrew.

Examples :

"The mechanic used a jackscrew to slowly lift the heavy truck so he could change the tire. "

为了更换轮胎，修理工用螺旋千斤顶慢慢地抬起了那辆重型卡车。

Related Words

truck noun

/tɹʌk/

炮车轮，滚轮

"The antique gun carriage needed a new truck to be moved around the museum. "

这辆古老的炮车需要一个新的炮车轮才能在博物馆里移动。

could verb

/kʊd/ /kəd/

可以，能够.

"My teacher said I could retake the test if I studied hard. "

我的老师说如果我努力学习，我可以重考。

mechanical noun

/mɪˈkanɪk(ə)l/

机械稿，完稿

"The graphic designer carefully prepared the mechanical for the company brochure. "

这位平面设计师为公司宣传册精心准备了机械稿。

change noun

/tʃeɪndʒ/

变化，改变

"The product is undergoing a change in order to improve it."

为了改进产品，产品正在经历一个变化的过程。

device noun

/dəˈvaɪs/

设备，装置。

"There are a number of household devices in a kitchen such as a dishwasher, a garbage disposal, or an electric can opener."

厨房里有很多家用设备，比如洗碗机、垃圾处理器或电动开罐器。

lifting verb

/ˈlɪft.ɪŋ/

举起，抬起.

"The fog eventually lifted, leaving the streets clear."

最终雾气散去，街道变得清晰起来。

mechanic noun

/məˈkænɪk/

技工，机修工.

"The mechanic fixed the broken bicycle chain. "

那个技工修好了断掉的自行车链条。

operated verb

/ˈɒpəreɪtɪd/ /ˈɑːpəreɪtɪd/

操作，运转，运行

"The baker operated the oven to bake the bread. "

面包师操作烤箱来烤面包。

turning verb

[ˈtɜː.nɪŋ] [ˈtɝ.nɪŋ]

转弯, 拐弯

"The car was turning left at the intersection. "

汽车正在路口左转。

which pronoun

/wɪt͡ʃ/

哪个，哪些

"By now, you must surely know which is which."

到现在，你肯定应该知道哪个是哪个了吧。

slowly adverb

/ˈsləʊli/ /ˈsloʊli/

慢慢地，缓慢地。

"The snail crawled slowly across the sidewalk. "

蜗牛慢慢地爬过人行道。

heavy noun

/ˈhe.vi/ /ˈhɛ.vi/ /ˈhiːvi/

坏人，恶棍。

"With his wrinkled, uneven face, the actor always seemed to play the heavy in films."

那个演员长着一张饱经风霜、凹凸不平的脸，所以好像总是在电影里演坏人。