sulphur 音标拼音: [s'ʌlfɚ]
n .
U 硫磺
U 硫磺
sulphur n 1 :
an abundant tasteless odorless multivalent nonmetallic element ;
best known in yellow crystals ;
occurs in many sulphide and sulphate minerals and even in native form (
especially in volcanic regions ) [
synonym : {
sulfur }, {
S },
{
sulphur }, {
atomic number 16 }]
v 1 :
treat with sulphur in order to preserve ; "
These dried fruits are sulphured " [
synonym : {
sulphur }, {
sulfur }]
Sulphur \
Sul "
phur \,
n . [
L .,
better sulfur :
cf .
F .
soufre .]
1 . (
Chem .)
A nonmetallic element occurring naturally in large quantities ,
either combined as in the sulphides (
as pyrites )
and sulphates (
as gypsum ),
or native in volcanic regions ,
in vast beds mixed with gypsum and various earthy materials ,
from which it is melted out .
Symbol S .
Atomic weight 32 .
The specific gravity of ordinary octohedral sulphur is 2 .
05 ;
of prismatic sulphur ,
1 .
96 .
[
1913 Webster ]
Note :
It is purified by distillation ,
and is obtained as a lemon -
yellow powder (
by sublimation ),
called flour ,
or flowers ,
of sulphur ,
or in cast sticks called roll sulphur ,
or brimstone .
It burns with a blue flame and a peculiar suffocating odor .
It is an ingredient of gunpowder ,
is used on friction matches ,
and in medicine (
as a laxative and insecticide ),
but its chief use is in the manufacture of sulphuric acid .
Sulphur can be obtained in two crystalline modifications ,
in orthorhombic octahedra ,
or in monoclinic prisms ,
the former of which is the more stable at ordinary temperatures .
Sulphur is the type ,
in its chemical relations ,
of a group of elements ,
including selenium and tellurium ,
called collectively the sulphur group ,
or family .
In many respects sulphur resembles oxygen .
[
1913 Webster ]
2 . (
Zool .)
Any one of numerous species of yellow or orange butterflies of the subfamily {
Pierinae };
as ,
the clouded sulphur ({
Eurymus philodice }
syn . {
Colias philodice }),
which is the common yellow butterfly of the Eastern United States .
[
1913 Webster ]
{
Amorphous sulphur } (
Chem .),
an elastic variety of sulphur of a resinous appearance ,
obtained by pouring melted sulphur into water .
On standing ,
it passes back into a brittle crystalline modification .
{
Liver of sulphur }. (
Old Chem .)
See {
Hepar }.
{
Sulphur acid }. (
Chem .)
See {
Sulphacid }.
{
Sulphur alcohol }. (
Chem .)
See {
Mercaptan }.
{
Sulphur auratum } [
L .] (
Old Chem .),
a golden yellow powder ,
consisting of antimonic sulphide , {
Sb2S5 }, --
formerly a famous nostrum .
{
Sulphur base } (
Chem .),
an alkaline sulphide capable of acting as a base in the formation of sulphur salts according to the old dual theory of salts . [
Archaic ]
{
Sulphur dioxide } (
Chem .),
a colorless gas , {
SO2 },
of a pungent ,
suffocating odor ,
produced by the burning of sulphur .
It is employed chiefly in the production of sulphuric acid ,
and as a reagent in bleaching ; --
called also {
sulphurous anhydride },
and formerly {
sulphurous acid }.
{
Sulphur ether } (
Chem .),
a sulphide of hydrocarbon radicals ,
formed like the ordinary ethers ,
which are oxides ,
but with sulphur in the place of oxygen .
{
Sulphur salt } (
Chem .),
a salt of a sulphacid ;
a sulphosalt .
{
Sulphur showers },
showers of yellow pollen ,
resembling sulphur in appearance ,
often carried from pine forests by the wind to a great distance .
{
Sulphur trioxide } (
Chem .),
a white crystalline solid , {
SO3 },
obtained by oxidation of sulphur dioxide .
It dissolves in water with a hissing noise and the production of heat ,
forming sulphuric acid ,
and is employed as a dehydrating agent .
Called also {
sulphuric anhydride },
and formerly {
sulphuric acid }.
{
Sulphur whale }. (
Zool .)
See {
Sulphur -
bottom }.
{
Vegetable sulphur } (
Bot .),
lycopodium powder .
See under {
Lycopodium }.
[
1913 Webster ]
安装中文字典英文字典查询工具!
中文字典英文字典工具:
复制到剪贴板
英文字典中文字典相关资料:
Claude Claude is Anthropic's AI, built for problem solvers Tackle complex challenges, analyze data, write code, and think through your hardest work
Claude Cowork | Anthropic’s agentic AI for knowledge work Claude Cowork is a system built by Anthropic that executes multi-step knowledge work on a user's behalf, including research synthesis, document preparation, and file management It is not a chat assistant
Anthropic’s Claude used by Pentagon in war with Iran, official confirms Anthropic’s signature AI model Claude is being used by the Pentagon during the U S military’s ongoing war against Iran, a Pentagon official confirmed Tuesday during a Senate subcommittee
Claude AI for Windows and macOS Download | TechSpot Claude is a next generation AI assistant built by Anthropic and trained to be safe, accurate, and secure to help you do your best work
The AI for Problem Solvers | Claude by Anthropic Claude is Anthropic's AI, built for problem solvers Tackle complex challenges, analyze data, write code, and think through your hardest work
Judge presses DOD on why Anthropics Claude was blacklisted Anthropic wants a judge to pause the Pentagon's supply chain risk designation and President Donald Trump's directive banning federal agencies from using its Claude AI models U S District Judge
Judge says governments Anthropic ban looks like punishment Tech company Anthropic, the maker of the Claude AI system, is suing the Trump administration over the government labeling it a "supply chain risk "
Introducing Claude - Anthropic We’re offering two versions of Claude today: Claude and Claude Instant Claude is a state-of-the-art high-performance model, while Claude Instant is a lighter, less expensive, and much faster option
Think fast, - claude. ai Meet Claude, an AI assistant from Anthropic designed to help you draft, create, and iterate on various projects securely and efficiently
Claude Claude is Anthropic's AI, built for problem solvers Tackle complex challenges, analyze data, write code, and think through your hardest work