Sponsored Links
This presentation is the property of its rightful owner.
1 / 103

长度测量 PowerPoint PPT Presentation


  • 66 Views
  • Uploaded on
  • Presentation posted in: General

长度测量. 长度单位:米的定义. 三次定义 我国的长度单位是米。在 1983 年第十七届国际计量大会上正式通过米的新定义如下: “ 米是光在真空中 1 / 299792458 秒的时 间内所经过的距离。 ”. 米原器. 通过计量检定,将国家计量标准器(基准)所复现的计量单位的量值,通过标准 , 逐 级传递到工作用的计量器具,以保证对被测对象所测得量值的准确和一致。这个过程称为量值传递。. 长度量值传递.

Download Presentation

长度测量

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript



  • 1983

    1299792458






    • 012340

    • 12 34561



1l20341256341203412 53

2

0123450l2345


3.



:()()


31

1.

31


3201250150mm

Vernier Caliper


l mm49mm500.98mm0.02mm490.02mm0.04mml mm


820.10mm

20.302.30mm


  • 34O150 mm 0.01 mm 0115 mm0.03mm0.05mm



Outside Micrometers

0.5mm 25 mm

Outside Micrometers


2

251mm0.5mm0.5mm500.5mm(150)0.01mm0.01mm

14.10mm


0.01mm


(a)

(b)


R4R3R3R4R10. 1mmK:


  • 0.00l0.00050.00020.00010.00002mm 0.03 0.015 0.006 0.003 0.001mm(0.3m3m) 1%2.5%


a)(b)(0.0l0.25mm)221431224



:180mm


C CCCa2 a CC C


POsa

bO

SCC

K2

KK20.20.25um


100mm0.001mm 500mm


124348912137

()5l011mm11106


85 78 lmm 0.lmm 01010354045 0.1 mm1000.001mm7

7.141 mm

1.5+ L/100um




7156l675


2212


12346m12m()

1


671470100mm10000.1mm1410100mm01297

1514111412II98147(79)30.1mm2


258628280.1mm


ABF1AB J250mmA'B '


234511.



53.764mm

19JA11100.1mm1mm101001000.1mm0.001mm


11234564



4612436A596787A99105011


ala=+4i=0.1umi (a2-a1)=+0.5um


(


234564748910




a13243


0l05 mm 15

aS


(bS





0.lum



(P)()()


K120P0 ()


dL1(l500mm)L2PSkla (d):


112344563bb5aa


1432 35

OO,A



XYZ


xyz

(UMM)0.5um1um2um0.20.1um(CMM)5um10um1um2um


CMM


X

3600

mm

Y

2438

mm

Z

1524

mm

25.4

m/min

0.0005

mm

0.028/1400

mm


Chameleon 7107

:

6501000650

:

2.1+L/355(ISO 10360-2)


fm





  • 1mm)


43 1 5


TM



:


1982IBMGerd Binnig(Heinrich Rohrer)Scanning Tunneling Microscope,STM


STM)exp,k.1


1nm


1990IBM35IBM


Atomic Force Microscope AFM

STM



  • Login