【正文】 , NI pany officially released the for Macintosh version of the in January, came in August in support of SUN Solaris workstation and PCLabview version available in January, version is developed in February, version available, this version is a milestone in the history of Labview years, Labview7Express and Labview 7 Series start into the market, in the Labview 7 series, introduced a new data type Dynamic Data Types years, Labview 8 version of the interview, the version of the specific distributed, intelligent outstanding features , the 20th anniversary edition of Labview an interview. is the Chinese version of in August, available in August, version available After 20 years of continuous innovation, development, Labview to rely on the concept of a new and unique advantages, and has maintained an efficient and powerful, and open the three basic characteristics, and gradually bee the industry standard. The above describes the characteristics of Labview and development, described below how the kind of virtual instrument design Typically, a virtual instrument design steps are as follows: (1). In the design window, place the front panel controls, front panel using the tool template development window, the corresponding tools, from the control template and place a good access control is needed to carry out parameter setting control properties, stickers text description tag. (2). In the flow chart editing window, place the nodes, frame, in the flow chart editing window, use the tool template corresponding tools, from a functional template and put a good access to the required icon, they are the flow chart in the nodes , frame. (3). The data flow programming, data flow using the connection tool according to the direction of the port, node, frame in turn connected to data from the source sent to the prescribed purpose terminal operating mode. (4). Run test, when the pletion of step (a), (2), (3), the front panel procedure and flow chart graphic design program is pleted, a virtual instrument has been basically established, whether to achieve the desired functionality, need to run the test. There are two kinds of test methods. a. Simulation Test: do not use I / O interface hardware. I needed to run tests on the signal data is from array or signalgenerating function, resulting emulation signal. b. Measured test: it is through the I / O interface to hardware devices, gathering input standard signal, to test the virtual instrument capabilities. Simulation test in experimental tests carried out prior to the virtual instrument unique advantage because of its repeated testing, debugging, and constantly improve the improvement of virtual instrument is extremely convenient, is a traditional instrument can not be used in test methods. (5).debugging techniques, use the toolbar shortcut Run, highlight the implementation of, Step, Breakpoint set to the following steps to program debugging. a. to identify grammatical errors, if there is a syntax error, then when start the Shortcut Bar Run button, the button bees a broken arrow, the program can not perform. Mouse click on the button, a list will pop up an error window, the window listed in the wrong item, and then click any one of the listed errors, click the Find function button, then the error object, or the port will be changed bright. b. slow tracking program running, use the shortcut in the toolbar39。虛擬儀器的“虛擬”有兩個(gè)層面的意思 :， 2虛擬的測(cè)量測(cè)試與分析。另 一個(gè)原因是LabVIEW 有豐富的圖形化用戶接口（ GUI） ,使用這些接口使編程變得很容易。 （ 3).數(shù)據(jù)流程編程，使用連線工具按數(shù)據(jù)流的方向?qū)⒍丝?、?jié)點(diǎn)、圖框依次相連，實(shí)現(xiàn)數(shù)據(jù)從源頭按規(guī)定的運(yùn)行方式送到目的終點(diǎn)。 ，如果存在語(yǔ)法錯(cuò)誤，則當(dāng)啟動(dòng)快捷工具欄的 “運(yùn)行 ”按鈕時(shí)，該按鈕變成一個(gè)折斷的箭頭，程序不能執(zhí)行。 (6).數(shù)據(jù)觀察，當(dāng)檢查觀察中發(fā)現(xiàn)有錯(cuò)誤時(shí)，鼠標(biāo)單擊 “Highlight Execution”按鈕，觀察數(shù)據(jù)流中各個(gè)節(jié)點(diǎn)的數(shù)值。s is restricted because Gao et al.(1998)bsowed when SWNT diameter exceeds a limit, its natural shape is collapsed form. Thus, it is imposssible to use them in this system. Consequently, the pressure sensor only is able to sense retricted number of pressure(SWNTs39。這種現(xiàn)象顯示的是單壁碳納米管直徑的函數(shù)。在這種情況下，單壁碳納米管的物理性質(zhì)的改變并且其截面變成橢圓形。 為了克服以前推出的開關(guān)的壓力感應(yīng)范圍的限制，在這項(xiàng)研究中，一個(gè)可調(diào)諧的可以使用非常簡(jiǎn)單的系統(tǒng)切換較高的分辨率壓力開關(guān)系統(tǒng)已經(jīng)推出。在某一個(gè)點(diǎn)，橫截面形狀由圓形塌陷成橢圓形。當(dāng)變形達(dá)到一定量時(shí)，單壁碳納米管變得不穩(wěn)定和塌陷。當(dāng)靜水壓力應(yīng)用到單壁碳納米管，它的直徑按比例均勻減少所施加的壓力： dNT0 是單壁碳納米管的初始直徑（在零壓力）和 E 是其有效楊氏模量（圖 5） 為了計(jì)算上拉電壓，彈性和靜電領(lǐng)域應(yīng)予以考慮。 結(jié)論 綜上所述，一個(gè)只使用一個(gè)單壁碳納米管的可調(diào)諧壓力開關(guān)已經(jīng)生產(chǎn)出來(lái)，其運(yùn)行機(jī)制如下： 當(dāng)關(guān)于一定的壓力的吸合電壓誘導(dǎo)系統(tǒng)，直到施加的壓力達(dá)到一定數(shù)值，單壁碳納米管才不會(huì)扭 結(jié)并且不會(huì)在地平面上。