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:

camphol    
n. 龙脑

龙脑

Borneol \Bor"ne*ol\, n. [Borneo -ol.] (Chem.)
A rare variety of camphor, {C10H17.OH}, resembling ordinary
camphor, from which it can be produced by reduction. It is
said to occur in the camphor tree of Borneo and Sumatra
({Dryobalanops camphora}), but the natural borneol is rarely
found in European or American commerce, being in great
request by the Chinese. Called also {Borneo camphor}, {Malay
camphor}, and {camphol}.
[1913 Webster]


Camphol \Cam"phol\, n. [Camphor -ol.] (Chem.)
See {Borneol}.
[1913 Webster]


Camphor \Cam"phor\ (k[a^]m"f[~e]r), n. [OE. camfere, F. camphre
(cf. It. canfora, Sp. camfora, alcanfor, LL. canfora,
camphora, NGr. kafoyra`), fr. Ar. k[=a]f[=u]r, prob. fr. Skr.
karp[=u]ra.]
1. A tough, white, aromatic resin, or gum, obtained from
different species of the {Laurus} family, esp. from
{Cinnamomum camphara} (the {Laurus camphora} of
Linn[ae]us.). Camphor, {C10H16O}, is volatile and
fragrant, and is used in medicine as a diaphoretic, a
stimulant, or sedative.
[1913 Webster]

2. originally, a gum resembling ordinary camphor, obtained
from a tree ({Dryobalanops aromatica} formerly
{Dryobalanops camphora}) growing in Sumatra and Borneo;
now applied to its main constituent, a terpene alcohol
obtainable as a white solid {C10H18O}, called also {Borneo
camphor}, {Malay camphor}, {Malayan camphor}, {camphor of
Borneo}, {Sumatra camphor}, {bornyl alcohol}, {camphol},
and {borneol}. The isomer from {Dryobalanops} is
dextrorotatory; the levoratatory form is obtainable from
other species of plants, and the racemic mixture may be
obtained by reduction of camphor. It is used in perfumery,
and for manufacture of its esters. See {Borneol}.
[1913 Webster PJC]

Note: The name camphor is also applied to a number of bodies
of similar appearance and properties, as {cedar
camphor}, obtained from the red or pencil cedar
({Juniperus Virginiana}), and {peppermint camphor}, or
{menthol}, obtained from the oil of peppermint.
[1913 Webster]

{Camphor oil} (Chem.), name variously given to certain
oil-like products, obtained especially from the camphor
tree.

{Camphor tree}, a large evergreen tree ({Cinnamomum
Camphora}) with lax, smooth branches and shining
triple-nerved lanceolate leaves, probably native in China,
but now cultivated in most warm countries. Camphor is
collected by a process of steaming the chips of the wood
and subliming the product.
[1913 Webster]


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


  • Online Stopwatch - easy to use - timeanddate. com
    Online stopwatch Easy to use and accurate stopwatch with lap times and alarms Optional split intervals and alarm sound
  • Online Timer - timeanddate. com
    Timer online with alarm Create one or multiple timers and start them in any order
  • Online Stopwatch - How to Use it - Support - timeanddate. com
    Online Stopwatch What Can I Use It For? The Online Stopwatch is an easy to use and versatile timer that can be used for sports, cooking at home, at work, or in the classroom Time a run, a conference talk or the duration it takes for you to cook the perfect steak
  • FAQ: Online Stopwatch - timeanddate. com
    Free, simple online stopwatch with start alerts, lap times, and sounds Time your activities and save your timings in a text file
  • Timers Countdowns Overview - timeanddate. com
    Explore our online timers and countdown tools Create your own countdown or use our pre-made countdowns to popular events
  • Customize and personalize timeanddate. com
    Stopwatch Timer Countdown to Any Date Easter Countdown Summer Countdown New Year Countdown Countdown for Your Site Calculators Date to Date Calculator (duration) Business Date to Date (exclude holidays) Date Calculator (add subtract) Business Date (exclude holidays) Weekday Calculator Week Number Calculator Roman Numeral Converter Alternative
  • timeanddate. com
    Online Stopwatch Time your activities With start alerts, lap times, and alarm sound
  • Countdown Timer to Any Date
    Create a Countdown Timer that counts down in seconds, minutes, hours and days to any date, with time zone support It also counts up from a past date
  • Time Zone and DST Tools Articles
    A guide to all things time zones and Daylight Saving Time on timeanddate com—including which countries use DST, local time worldwide, a time zone converter, and meeting planner
  • The Personal World Clock - timeanddate. com
    Choose your locations and show current local time with links to each city with extensive info on time, weather, Daylight Saving Time, sunrise, sunset and moon phases





中文字典-英文字典  2005-2009