英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字,中文词皆可:

paraffin    音标拼音: [p'ɛrəfən]
n. 石蜡

石蜡

paraffin
n 1: from crude petroleum; used for candles and for preservative
or waterproof coatings [synonym: {paraffin}, {paraffin wax}]
2: a series of non-aromatic saturated hydrocarbons with the
general formula CnH(2n2) [synonym: {methane series}, {alkane
series}, {alkane}, {paraffin series}, {paraffin}]
3: (British usage) kerosine [synonym: {paraffin}, {paraffin oil}]

Paraffin \Par"af*fin\ (p[a^]r"[a^]f*f[i^]n), Paraffine
\Par"af*fine\ (p[a^]r"[a^]f*f[i^]n or p[a^]r"[a^]f*f[=e]n), n.
[F. paraffine, fr. L. parum too little affinis akin. So
named in allusion to its chemical inactivity.] (Chem.)
A white waxy substance, resembling spermaceti, tasteless and
odorless, and obtained from coal tar, wood tar, petroleum,
etc., by distillation. It is used in candles, as a sealing
agent (such as in canning of preserves), as a waterproofing
agent, as an illuminant and as a lubricant. It is very inert,
not being acted upon by most of the strong chemical reagents.
It was formerly regarded as a definite compound, but is now
known to be a complex mixture of several higher hydrocarbons
of the methane or marsh-gas series; hence, by extension, any
substance, whether solid, liquid, or gaseous, of the same
chemical series; thus gasoline, coal gas and kerosene consist
largely of paraffins.
[1913 Webster PJC]

Note: In the present chemical usage this word is spelled
paraffin, but in commerce it is commonly spelled
paraffine.
[1913 Webster]

{Native paraffin}. See {Ozocerite}.

{Paraffin series}. See {Methane series}, under {Methane}.
[1913 Webster]


请选择你想看的字典辞典:
单词字典翻译
Paraffin查看 Paraffin 在百度字典中的解释百度英翻中〔查看〕
Paraffin查看 Paraffin 在Google字典中的解释Google英翻中〔查看〕
Paraffin查看 Paraffin 在Yahoo字典中的解释Yahoo英翻中〔查看〕





安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • What is Screening: Definition, Types, and Importance
    Understand the importance and types of screening processes Learn how effective screening can safeguard and enhance the quality of your workforce
  • What is Screening? Importance and Methods
    Understand the importance and methods of screening in various contexts to enhance safety, efficiency, and suitability in decisions
  • A Standard Approach To Screening - Alberta Health Services
    The purpose of developing a standard approach to screening and providing a menu of evidence-based tools is to ensure early recognition of both addiction and mental health issues consistently across the service continuum
  • Screening programmes: a short guide - World Health Organization
    Each screening programme has diferent benefits and harm, and the balance between these depends on the screening technology, the quality of delivery of the screening services and other contextual factors such as the health of the invited population and the prevalence of the condition in the screened popula-tion
  • What is Screening: Essential Methods and Applications
    Explore the essential methods and applications of screening in various contexts, ensuring effectiveness and compliance in processes
  • The Importance of Regular Health Screenings and How to Schedule Them
    So, if you have not attended your regular health screenings, then read on, as here, the importance of screening services will be explored What is a Health Screening? Looking at the definition first, a health screening is a health check-up that looks at a general picture of your health while you are asymptomatic or in good health
  • NHS screening - NHS
    NHS screening Screening is a way of finding out if people have a higher chance of having a health problem, so that early treatment can be offered or information given to help them make informed decisions This page gives an overview of screening, with links to the different types of screening offered by the NHS in England What is screening?
  • Comparing Screening Services: What You Need to Know - GCheck™
    In today’s competitive business environment, finding the right screening service can be a game-changer Whether you’re a business owner, HR professional, recruiter, or job seeker, understanding the landscape of screening services is crucial This guide serves as your roadmap in navigating the often complex world of screening service providers We’ll dive into what you need to consider
  • What is Screening? Definition and Explanation | EasyHR
    What is Screening? Screening in the context of recruitment refers to the process of reviewing, evaluating, and assessing candidates to determine their suitability for a particular job or role
  • What’s Screening? | Essential Insights Uncovered
    Screening is a systematic process to identify individuals at risk for specific conditions or diseases, enabling early intervention





中文字典-英文字典  2005-2009