pentane

/ˈpɛnˌteɪn/ /pɛnˈteɪn/

Meanings

noun

戊烷

An aliphatic hydrocarbon of chemical formula C5H12; either of the three isomers n-pentane, methyl-butane (isopentane), and di-methyl-propane (neopentane); volatile liquids under normal conditions.

Examples :

"The lab technician carefully measured out a small amount of pentane for the experiment. "

实验室技术员小心地量取了少量的戊烷用于实验。

Related Words

hydrocarbon noun

/ˈhaɪdroʊˌkɑːrbən/ /ˈhaɪdrəˌkɑːrbən/

碳氢化合物，烃。

"Gasoline is a hydrocarbon fuel used in many cars. "

汽油是一种碳氢燃料，很多汽车都在使用。

experiment noun

/ɛk.ˈspɛ.ɹɪ.mənt/ /ɪk.ˈspɛɹ.ə.mənt/

实验，试验

"The science teacher conducted an experiment to demonstrate how plants grow in different types of soil. "

科学老师做了一个实验，来展示植物在不同类型的土壤里是如何生长的。

volatile noun

/ˈvɒl.əˌtaɪ.(ə)l/ /ˈvɑl.ə.tl̩/

挥发物，易挥发物质

"The volatile quickly evaporated from the science experiment. "

这种挥发物很快就从科学实验中蒸发掉了。

conditions noun

/kənˈdɪʃənz/

条件, 状况, 前提。

"The program will run smoothly under these conditions: the computer has enough memory and the internet connection is stable. "

程序在以下条件下可以顺利运行：计算机有足够的内存且网络连接稳定。

isomers noun

/ˈaɪsəmərz/ /aɪˈsɒmərz/

同分异构体，异构物。

"Glucose and fructose are isomers; they both have the formula C6H12O6, but their atoms are arranged differently. "

葡萄糖和果糖是同分异构体；它们的分子式都是C6H12O6，但是原子排列方式不同。

carefully adverb

/ˈkɛːfli/ /ˈkɛɹfli/

小心地，谨慎地，细致地

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

他小心地听着母亲的担忧，为她的失望感到难过。(Tā xiǎoxīn de tīngzhe mǔqīn de dānyōu, wèi tā de shīwàng gǎndào nánguò.)

technician noun

/tekˈnɪʃən/

技术员，技师

"The computer technician fixed the broken printer in the school library. "

学校图书馆里的电脑技术员修好了那台坏掉的打印机。

aliphatic noun

/ælɪˈfætɪk/

脂肪族化合物

""Because it contains only carbon and hydrogen atoms arranged in a straight chain, that organic molecule is classified as an aliphatic." "

由于那个有机分子只含有碳和氢原子，并且它们排列成直链，因此它被归类为脂肪族化合物。

formula noun

/ˈfɔː.mjʊ.lə/ /ˈfɔɹ.mjə.lə/

公式，方程式

"The formula for calculating the area of a rectangle is length times width. "

计算长方形面积的公式是长乘以宽。

propane noun

/ˈpɹoʊpeɪn/

丙烷

"My dad uses propane to fuel the barbecue grill for our family cookouts. "

我爸用丙烷来给烧烤架提供燃料，这样我们家就可以举办烧烤聚会了。

chemical noun

/ˈkɛmɪkəl/

化学物质，化学品

"The scientist studied the chemical composition of the soil sample. "

这位科学家研究了土壤样本的化学物质组成。

measured verb

/ˈmɛʒəd/ /ˈmɛʒɚd/

测量，衡量，度量。

"We measured the temperature with a thermometer. You should measure the angle with a spirit level."

我们用温度计测量了温度。你应该用水平仪测量这个角度。