写一篇英语作文，是介绍自己最喜欢的一门课的原因，我喜欢物理

bit

did

dig

din

fig

fit

fir

gig

gin

hit

hip

him

his

jig

kit

kid

kin

lie

lit

lid

mid

mit

nit

oil

pit

pig

rid

rib

rig

sip

sit

sir

tit

tip

tin

wit

yip

zip

A-Z大概常用的就有这麼多了~希望对您有帮助。

FUSIBLE ALLOYS Fusible alloys are those with melting points below the boiling point of water (100°C) They are used as binding plugs in automatic sprinkler systems

for low-temperature boiler plugs

for soldering pewter and other soft metals

for tube bending

and for casting pattern and many ornamental articles and toys They are also used for holding optical lenses and other parts for grinding and polishing They consist generally of mixtures of lead

tin

cadmium

and bi uth The general rule is that an alloy of o metals has a melting point lower than that of either metal alone By adding still other low-fusing metals to the alloy a metal can be obtained with almost any desired low melting point Newton’s metal

used as a solder for pewter

contains 50% bi uth

25% cadmium

and 25% tin It melts at 95°C

and will dissolve in boiling water Lipowitz alloy

another early metal

contains 3 parts cadmium

4 tin

15 bi uth

and 8 lead It melts at 70°C

is very ductile

and takes a fine polish It was employed for casting fine ornaments

but now has many industrial uses A all amount of indium increases the brilliance and lowers the melting point 145°C for each 1% of indium up to a maximum of 18% Wood’s alloy

or Wood’s fusible metal

was the first metal used for automatic sprinkler plugs It contained 7 to 8 parts bi uth

4 lead

2 tin

and 1 to 2 cadmium It melts at 71°C

and this point was adopted as the operating temperature of sprinkler plugs in the United States; in England it is 68°C The alloy designated as Wood’s metal contains 50% bi uth

25% lead

25% tin

and 125% cadmium It melts at 70°C Cerrobend

or Bendalloy

is a fusible alloy for tube bending that melts at 71°C Cerrocast is a bi uth–tin alloy with pouring range of 138 to 170°C

and shrinkage of only 00025 cm/cm

used for making pattern molds Cerrosafe

or Safalloy

is a fusible metal used for toycasting sets

as the molten metal will not burn wood or cause fires Alloys with very low melting points are sometimes used for this reason for pattern and toy casting A fusible alloy with a melting point at 60°C contains 265% lead

135% tin

50% bi uth

and 10% cadmium These alloys expand on cooling and make accurate impressions of the molds The Tempil pellets are alloy pellets made with melting points in steps of –108

10

and 377°C for measuring temperatures from 45 to 1371°C The Semalloy metals cover a wide range of fusible alloys with various melting points Semalloy 1010 with a melting point at 47°C can be used where the melting point must be below that of thermoplastics It contains 45% bi uth

23% lead

19% indium

8% tin

and 5% cadmium Semalloy 1280

for uses where the desired melting is near the boiling point of water

melts at 96°C It contains 52% bi uth

32% lead

and 16% tin

参考: Encyclopedia of materials

parts

and finishes / by Mel Schwartz—2nd ed

范文供你参考

Of all the subjects I study i like maths best I think it is reasonable You know maths helps you to exercise your brains， and make you smarter and more intelligent Maths can be applied in all fields of selene， and naturally it is said that maths is the mother of all subjects

Maths has been developing rapidly In the development of science and technology， there continuously appear problems which may be solved only with the help of maths This in turn makes maths itself develop faster Many examples can be cited to show the synchronous development of maths and technology and science From this point of view， we are sure to say that maths will develop still faster， for ，science and technology will con tinue to advance without stop

However， maths is not easy to master It requires a high degree of intelligence You can see some children who often fail to pass their maths examination， but others deal with it very easily This difference obviously comes from tim levels of intelligence But what is most important in mastering maths is one's hard work Though one is less clever， he can master it through diligence Countless facts have proved this point Maths is a challenge and that is why I like it

通过文件夹的方式读入TIN数据即可，系统会自动获取其中的相关信息。当然你也可以通过代码获取 TIN数据中 三角网的点号、坐标。

下面是 C# 读取 TIN数据的代码：

/// <summary>

/// 打开 TIN 文件

/// </summary>

/// <param name="aFolderName">TIN文件夹 名</param>

/// <param name="axMapControl">axMapControl（可已将其换为 Scene

或 Globe 控件）</param>

/// <returns></returns>

public void OpenFile_TINFolder(string aFolderName, AxMapControl axMapControl)//打开TIN文件

{

string pathToWorkspace = SystemIOPathGetDirectoryName(aFolderName);

string tinName = SystemIOPathGetFileName(aFolderName);

IWorkspaceFactory pWorkspaceFactory = new TinWorkspaceFactoryClass();

IWorkspace pWorkspace = pWorkspaceFactoryOpenFromFile(pathToWorkspace, 0);

ITinWorkspace pTinWorkspace = pWorkspace as ITinWorkspace;

ITinLayer pTinLayer = new TinLayerClass();

if (pTinWorkspaceget_IsTin(tinName))

{

ITin pTin = pTinWorkspaceOpenTin(tinName);

pTinLayerDataset = pTin;

pTinLayerClearRenderers();

pTinLayerName = tinName;

}

axMapControlAddLayer(pTinLayer);

axMapControlActiveViewRefresh();

}

希望对你有帮助！

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