The authers endeavour to enumerate the recognition classification of screw and screw cap and draw up a recognition program.

列舉了螺紋與螺栓頭的識別分類国内视频日韩精品视频在线播放，編制了識別程序好爽好深好紧好高潮。

It is made up of primary screw, secondary screw, butane pump, extruding mould head, molding device, traction machine and take-in machine.

它是由無數(shù)小螺絲釘欧美日韩一级在线观看，二級螺紋欧美一区二区入口www，丁烷泵www.插逼com，擠出模頭白白色手机在线，成型裝置，牽引機(jī)午夜三级永久久久，并采取合機(jī)日韩无码黄片免费高清。

This paper gives some analysis of the working process of the screw compressor with economizer, separates it into three stages: quasi-compression process of the low stage, charge-compression stage, and quasi-compression process of high stage, sets up the mathematical models and its solution of the actual process. The capability increscence of the screw compressor with R717 and R22 after using the economizer has been calculated.

在分析帶經(jīng)濟(jì)器螺桿制冷循環(huán)系統(tǒng)工作機(jī)理的基礎(chǔ)上，本文著重分析和研究了壓縮機(jī)的工作過程欧美特黄性爱视屏，把帶經(jīng)濟(jì)器螺桿制冷壓縮機(jī)的工作過程分成&準(zhǔn)低壓級壓縮&黄色网址求、&充氣——壓縮&、&準(zhǔn)高壓級壓縮&三個階段欧美日韩午夜精品，并提出了反映該循環(huán)實質(zhì)的數(shù)學(xué)模型亚洲欧洲日韩综合色一二区，給出了求解方法，計算了R717人与动牲交av免费、R22兩種常用制冷工質(zhì)的螺桿壓縮機(jī)在帶經(jīng)濟(jì)器后的性能增長情況一级人与嘼视频免费播放。

Forty-sixe cases of symptomatic dynamic lumbar spinal instability were selected from the Ninth and Second People's Hospital from March 2003 to March 2007. They received dorsal spinal strenosis surgical decompression, titanium JJXA segmental pedicle screw fixation, intervertebral pace brace, intervertebral disc resection, with the sideward and the forward annulus fibrosus retained, endplate cartilage zone curetted, then received intervertebral bone particles graft, and pedicle screw compression. The patients were followed up for more than 15 months. The good and excellent rate was 91.3%.

選擇2003-03/2007-03南陽市第九人民醫(yī)院和南陽市第二人民醫(yī)院收治的動力性腰椎不穩(wěn)患者46例，行后正中入路下的椎管減壓手術(shù)黄色网址在线免费播放，鈦制JJXA椎弓根螺釘置入免费看黄色女人片，并行椎間隙撐開，雙側(cè)切除椎間盤保留側(cè)方以及前方的纖維環(huán)日本a网站在线看，刮除終板的軟骨層A片勉费视频网站，行椎間顆粒骨植骨，椎弓根螺釘系統(tǒng)加壓固定黄色视频一级黄。46例隨訪時間≥15個月黄片久久久久久久，優(yōu)良率91.3%。

The work electricity of Bottle Light needs no external power supply. Only one empty bottle (such as a cola bottle and a mineral water bottle) is needed. Screw down the original bottle cap and screw on Bottle light. Then compress the air in the bottle repeatedly to make the piston of Bottle Light move up and down, which changes mechanical energy into electric energy and light LED. Now a brand new light of environmental protection concept is in front of us.

Bottle Light 是一種新型節(jié)能環(huán)保燈亚欧A片视频在线观看，它充分發(fā)掘了廢物再利用的巨大潛能欧美全网一级AA片片黄大片，使人在日常生活中無形的增強(qiáng)環(huán)保意識，它的工作用電不需要任何外接電源供應(yīng)久操碎强奸，只需隨意拿起一個空瓶子將原有的瓶蓋擰下http://800av.com/，裝上 Bottle Light ，通過反復(fù)擠壓中文字幕Aⅴ无码一区二区三区，壓縮瓶內(nèi)空氣色哟哟网站www，使 Bottle Light 的活塞上下運動，將機(jī)械能轉(zhuǎn)化為電能12白嫩逼被操视频，點亮 LED 未满十八禁止免费网址，此時一個全新的環(huán)保概念燈展現(xiàn)在我們的面前黄色色色色色色色。

Cut off the power supply of the accumulator before installation, remove the former top light, pull out the original electric line with care while confirming the function of each hole of the base board, fix the base board with screw (better use the original top light screw), connect the down-lead of the product and bind to up, stuff the leftover back into the top shed, in sert firmly the main body, set the glider and fix it.

安裝前必須先斷開蓄電池的電源，然后拆下原車頂燈操逼污视频网站，小心拉出原電線黄页免费视频观看，同時確認(rèn)每條線的功能，參考上圖人人爽人人超人人高潮，將原車軟線穿過基座板中心孔学生妹97人人摸人人操浪潮，并用螺絲將本品引線相應(yīng)接上并包扎好，然后將多余的引線塞回頂棚无码天天av，同時再將主體牢牢地嵌入色哟哟在线播放高清视频观看，滑動鑲好進(jìn)行固定。

They range from large industrial extruders with screw diameters up to 6 or 8 in .down to the laboratory model with a 3/4in diameter screw .

他們范圍從大工業(yè)擠壓機(jī)以螺絲直徑由6 或8 決定在down 對實驗室模型與3/4.in 直徑螺絲思热在线视频精品免费观看。

Motor driven ball screw to achieve the main cutting me up and down the movement; the main movement is driven by the hydraulic motor rotating the spindle in order to achieve the cutting tool on the workpiece; radial feed through the nut and screw to achieve manually.

電機(jī)帶動滾珠絲杠實現(xiàn)主切削箱的上下運動又长又大又粗的日皮视频；主運動是由液壓馬達(dá)帶動主軸的旋轉(zhuǎn)，從而實現(xiàn)刀具對工件的切削高清无码视频在线观看的；徑向進(jìn)給是通過螺母與絲杠手動實現(xiàn)的亚洲图片小说。

Annual output of various specifications of more than 500 tons of metal wire; metal knitting net 500,000 m2, of which net square hole size 3 ~ 500 head / inch, mesh size of 8.00 ~ 0.025mm; dense network pattern specifications for 7 40 /~ 400 3200 Head / inch, mesh size of 315 ~ 3m; various filter components, filter 1.5 million, the smallest filtration precision of up to 1m; screener seized a (75mm, 200mm sieve sets of high precision electric molding and 200mm Screen test sets) is the national standard grinding found the Commission designated by a manufacturer; steel screw sets (with a high strength, corrosion resistance, impact resistance, high temperature, can be embedded in aluminum, magnesium and plastics such as low-intensity within the screw shell a new type of screw fasteners, specifications have an ordinary type, locking type and silver-plated type) and vibration screening equipment.

年產(chǎn)各種規(guī)格金屬絲材500多噸；金屬編織網(wǎng)50萬m2在线黄黄自慰，其中方孔網(wǎng)規(guī)格為3～500目/英寸黄片高清一区国产，網(wǎng)孔尺寸8.00～0.025mm；密紋網(wǎng)規(guī)格為7×40/～400×3200目/英寸人人看人人摸人人操人人色，網(wǎng)孔尺寸315～3μm有色有爽；各種濾網(wǎng)組件、濾芯150萬件很黄AAAAAAAAA片，最小過濾精度可達(dá)1μm 人人插人人操人人奸；篩分檢具（φ75mm、φ200mm高精度電成型套篩和Φ200mm試驗套篩）最近中文字幕大全2019，是國家磨委會指定的標(biāo)準(zhǔn)檢具生產(chǎn)廠家乱伦小说综合网；鋼絲螺套(具有高強(qiáng)度、抗腐蝕亚洲免费不卡视频、耐沖擊、耐高溫四位少妇精油按摩，能嵌入鋁成年人免费观看黄色视频、鎂及塑料等低強(qiáng)度殼體螺孔內(nèi)的新型螺紋緊固件，規(guī)格有普通型52pao国产成视频永久免费、鎖緊型和鍍銀型)及振動篩分設(shè)備国产短视频一区。

Objective To set up the finite element model of type Ⅱ axis odontoid fracture treated with anterior odontoid screw fixation and analyse the influence of different fixation position of screw 、different angle of fracture surface to the stability of odontoid process fracture fixed with anterior odontoid screw.

目的建立Ⅱ型齒狀突骨折螺釘固定的三維有限元模型台湾山村寡妇一级A片，分析不同螺釘內(nèi)固定位置以及骨折面角度對術(shù)后Ⅱ型齒狀突骨折端穩(wěn)定性的影響三级网站硬插。