A20B-0008-0540

A20B-0008-0540

按照前面講的相對伸長量決定勢能的規(guī)律，這段原長為  的質(zhì)元現(xiàn)儲存的勢能為 

如果將右側(cè)的  移到左邊相除，則得到的是該段介質(zhì)內(nèi)的平均勢能密度  ，故 仿照平均速度到瞬時速度的過渡方式——將時間  得到任意時刻的速度，現(xiàn)在考慮小的一段介質(zhì)，上式中的  ，無窮小量變成微分量，用 代替  ，則得介質(zhì)中任意點的勢能密度為 

看到了吧！兩個微分相除導(dǎo)致微商，這樣就得到導(dǎo)數(shù)了。

實際上，考慮任意時刻的情形，   是  和  的函數(shù)  ，故應(yīng)用偏導(dǎo)符號  代替  重寫為 這下好了！誰的導(dǎo)數(shù)？偏移量  對質(zhì)元坐標(biāo)  的偏導(dǎo)數(shù)，也就是質(zhì)元的偏移量對坐標(biāo)的變化率！這不就是波形曲線上某一點切線的斜率嗎？

所以，媒質(zhì)中質(zhì)元的勢能取決于波形曲線上的切線的斜率，斜率值越大，勢能越大，值越小，勢能就越小。

很顯然，波形曲線上，平衡位置處的斜率值大??！所以這個位置的勢能大！什么地方斜率為零？當(dāng)然就是波峰和波谷處，所以這些位置的勢能為零！

Advanced Energy AE RFX ATX 600 

Advanced Energy AE PE-10/20K

AE Advanced Energy RFG 3000  3155038-000G

AE Advanced Energy RFDS 2000-2V  3155038-013C

AE Advanced Energy  3151801-001F

Advanced Energy AE 3155039-000A 

AE Advanced Energy MDX-5K  2011-035-Y 

AE Advanced Energy HFV 8000  3155083-109

ADVANCED ENERGY AE-4855015 

AE RFPP Advanced  LF-5 500W  3150012-009

AE ADVANCED ENERGY 3157512-006D

AE Advanced Energy 3155126-017A

AE Advanced Energy  3155031-014D

AE Advanced Energy MDX-L6  3152343-000A

AE Advanced Energy MDX-20K  3152223-003-Y

AE ADVANCED ENERGY MDX-10K  3152012-043Z

AE Advanced Energy MDX-20K  3152223-003

AE Advanced Energy MDX-10K 3152012-041

Advanced Energy MDX-10K 3152012-043 X

AE Advanced Energy PDX 900-2V  3156024-031B

AE Advanced Energy PDX 1250  3156024-131A

Advanced Energy PDW 600 853-15516-003

Advanced Energy PDW 2200, AE 3156011 Lam 853-15516-002

Advanced Energy AE RFG-1250 Vacuum RF Power Supply Rblt

AE ADVANCED ENERGY 3157512-006C PE-POWER PACK AC PLASMA

Advanced Energy MDX-10K AE Magnetron DC 3152194-013 MRC

Advanced Energy MDX-20K Delta Master 20K 3152194-013 AE

AE Advanced Energy MDX-20K Master 3152223-003-Y 20kW

AE Advanced Energy RFPP LF-5 Generator 7520572050 500W

Advanced Energy RFG 1250 RF Generator AE 3155027-000 S

AE Advanced Energy PDX 1250 RF Generator 3156024-131A

AE Advanced Energy 2500W RF Match 3150275-007G working

Lam 660-095275-005

AE ADVANCED ENERGY HFV 8000 RF GENERATOR 8KW /FREE SHIP

Advanced Energy MDX-L12M DC Power AE Supply 2272-001 C

Advanced Energy Pinnacle DC Magnetron Power Supply AE

90 day warranty, 6 kW output, 208V input, M/N 2362-011

AE ADVANCED ENERGY 3155121-001 REV C

AE ADVANCED ENERGY MDX-500 DC POWER SUPPLY 500W MDX500

Advanced Energy AE RFG 3001 RF Generator

Advanced Energy RFG 3000 3155038-000 F RF Generator AE

Advanced Energy Apex 3013 RF Plasma Generator 3kW AE

AE,ADVANCED ENERGY PDX 1250 PLASMA POWER RF GENERATOR

Advanced Energy (AE) 3152012-002W MDX Magnatron Drive 

Advanced Energy PDX 8000 3156048-100B RF Generator AE

8kw, 360-460 kHz , 90 warranty Novellus #: 27-105446-00

Advanced Energy Inverter Focus, AE 3000-000

AE Advanced Energy AZX90 RF Match 3155031-011B AMAT

AE ADVANCED ENERGY RFG 1250 RF GENERATOR 3155027-000P

AE Advanced Energy RFG 1251 RF Generator 3155107-001 B

AE Advanced Energy APEX 3013 RF Generator AMAT Working 

Advanced Energy MDX-II 15K Power Supply: AE Magnetron

Advanced Energy Focus High Voltage AE 3006-000

Advanced Energy Verteq AE-6023-0000

Advanced Energy 3151802-001 AE Rapid-O Toroidal Plasma

Advanced Energy AE Multifunction RF Match 3156035-100A

ADVANCED ENERGY AE INDUCTIVELY COUPLED PLAMA SOURCE ICP

AE Advanced Energy Rapid F 6 kW Remote Plasma Source

Advanced Energy AE HTCM RF Match AZX Control Module

AE Advanced Energy AZX90 RF Match 3155031-004A AMAT

Advanced Energy AE PDW-600 Low Freq RF Generator

AE Advanced Energy AZX90 RF Match 3155031-004C AMAT

AE ADVANCED ENERGY PDW2200 RF GENERATOR

AE Advanced Energy RFX 2500 RF Generator 3155011-000

ADVANCED ENERGY PDW 2200 AE PDW 2200 LAM 660-015516-014

ADVANCED ENERGY PDW 2200 AE 3156011 Lam 853-015516-002

NEW RFPP Advanced Energy Harmonic Filter 1 kW 350kHz AE

Advanced Energy AE RFG / AZX Control Panel 3155050-000A

AE Advanced Energy RF10M RF20M User Manual 5708513 NEW

Advanced Energy AE GenCal RF Power Head PMH 400/2200

AE ADVANCED ENERGY CABLE

Advanced Energy (AE) 3152194-008X Slave Generator 

Advanced Energy (AE) 2194-008-S Slave Generator 

Advanced Energy AE RFPP LF-5 500W RF Generator

Advanced Energy RFX 1250 RF Generator 3155012-000-K AE

AE Advanced Energy 12cm MCIS Multi-Cell Ion source gun 

AE Advanced Energy 94cm Linear Ion Beam Source LIS 84cm

AE ADVANCED ENERGY Model MDX - 10K SLAVE

AE Advanced Energy 3153107-000D

AE Advanced Energy 3153110-001 

AE ADVANCED ENERGY PE-10/20K AC POWER SOURCE

AE Advanced Energy Low Pass Filter 1kW 3150202-000E

AE Advanced Energy MDX-5K Power Supply 5kW

Advanced Energy PDX 500 RF Plasma Generator NEW (AE)

Advanced Energy PDX 900-2V RF Plasma Generator (AE) PDX

AE Advanced Energy MDX-L6 Magnetron

Advanced Energy AE RFG/AZX Control Panel