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pentavalent

/ˌpɛntəˈveɪlənt/ /ˌpɛnɾəˈveɪlənt/

Meanings
adjective

五价的，正五价的

Having an atomic valence of 5.

Examples :

"Phosphorus is described as pentavalent because it can form five chemical bonds with other atoms. "
磷被描述为五价的，因为它能与其他原子形成五个化学键。
chemistry science compound element

Related Words

Illustration protecting

protecting verb

/pɹəˈtɛktɪŋ/

保护， 守护， 防护.

"Condoms are designed to protect against sexually-transmitted diseases."

安全套的设计是为了保护人们免受性传播疾病的侵害。

Illustration phosphorus

phosphorus noun

/ˈfɒsfəɹəs/ /ˈfɑsfɚəs/

磷，磷元素

"Phosphorus is a vital element found in DNA, a molecule crucial for all living things. "

磷是存在于dna中的一种重要元素，dna是一种对所有生物至关重要的分子。

Illustration recommended

recommended verb

/ˌɹɛkəˈmɛndɪd/

推荐，举荐，介绍.

"The board recommends Philips, given his ample experience in similar positions."

鉴于菲利普斯在类似职位上经验丰富，董事会推荐他。

Illustration because

because adverb

/bɪˈkɒz/ /biˈkɔz/

因为，由于。

"I went to the park because the weather was nice. "

因为天气很好，所以我去了公园。

Illustration having

having verb

/ˈhævɪŋ/

拥有，具有。

"I have a house and a car."

我拥有一栋房子和一辆汽车。

Illustration vaccine

vaccine noun

/vækˈsaɪn/

疫苗, 预防针

"My son received the measles vaccine to protect him from getting the illness. "

我儿子打了麻疹疫苗，为了保护他不生麻疹这种病。

Illustration against

against preposition

/əˈɡeɪnst/ /əˈɡɛ(ɪ)nst/ /əˈɡɛnst/

反对，逆着。

"It is hard work to swim against the current."

逆流游泳是很费力的。

Illustration different

different noun

/ˈdɪf.(ə)ɹ.ənt/

差别，差异。

"My family has a different ideal for my future than I do. "

对于我的未来，我的家人和我的理想存在差别。

Illustration diseases

diseases noun

/dɪˈziːzɪz/

疾病， 病害

"The tomato plants had some kind of disease that left their leaves splotchy and fruit withered."

这些番茄植株得了一种病，导致叶子上出现斑点，果实也枯萎了。

Illustration valence

valence noun

/ˈveɪləns/ /ˈvæləns/

价；效价；滴度。

"The doctor prescribed a new valence to treat the common cold virus, which was effective against several strains. "

医生开了一种新的针对普通感冒病毒的提取物，这种提取物对好几种毒株都有效。

Illustration described

described verb

/dɪˈskraɪbd/ /dəˈskraɪbd/

描述，描写。

"The feeling is difficult to describe, but not unpleasant."

这种感觉很难用语言描述，但并不令人不快。

Illustration chemical

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。