According to the standards of the petroleum industry in China and the technical criteria and operation code designed by the JB/T4730.4-2005 for oil drill collar magnetic particle inspection, and upon conducting experimental inspections on oil drill collars according to this criteria and through the comparisons of ultrasonic testing results and theoretical analysis, it is found that this technical criteria is able to detect the defects of the screw thread effectively.

根據(jù)中國石油行業(yè)標(biāo)準(zhǔn)和JB/T4730.4-2005對石油鉆鋌設(shè)計了石油鉆鋌磁粉檢測的工藝規(guī)范和工藝卡，并按此規(guī)范對石油鉆鋌進(jìn)行實驗探傷欧美精品AAAAAAA，通過對比超聲檢測的檢測結(jié)果及理論分析，此工藝規(guī)范可有效的檢測出鉆鋌螺紋部位的缺陷中国农村第一黄片视频。

In order to prevent abrasion and extend the service life, people deal with all kinds of researches. Now, people use a new method of preventing drill stem abrasion －Install non-rotating protector in the part near drill stem tie-in to solve this problem effectively.

為防止鉆柱磨損和延長鉆柱的使用壽命久久精品中文字幕乱码…，人們從事了各種各樣的研究工作，目前热久久中文字幕少妇，工程上采用了一種新型的防磨方法——在靠近鉆柱接頭的部位免费一级毛片视频,，安裝非旋轉(zhuǎn)防磨減斷保護(hù)套，有效地解決了這個問題亚洲色淫淫网。

Transmission device and part should be hung up when the valve is in horizontal in order to prevent damage of driving axle.

當(dāng)三国产永久视频、四通溜子水平放置運(yùn)輸時傳動裝置及傳動部位應(yīng)懸空，以防止傳動軸受力過大導(dǎo)致變形損壞国产精品久久久狼友。

Material and Methods:From March,2008 to January,2009,250 patients(146 Males and 104 Females,ranged from 18 to 82 years old,mean age was 48 years old) enrolled in the First Affiliated Hospital of Kunming Medical College were performed dual energy scan(Group A,200 patients) and Neuro-DSA scan(Group B,50 patients) using DSCT.The patients were randomly divided into Group A and Group B.Regarding to the justification of scan protocol,100 patients in Group A were selected as sub-group to explore the scan protocol.The image quality Was analyzed both in four categories(4.0/60欧美一级夜夜爽老妇、4.5/60、4.0/70、4.5/70) of flow rate and total amount of contrast-enhanced material and in three categories(100—150HU手机看片日韩精品视频在线、150—200HU999国产一区二区三区、200-250HU) of CT value of left common carotid artery.The comparison of two scan approach was based on image quality,radiation does, postprocessing methods,time of scanning and subtraction and data storage amount.To validate the diagnostic capability of DE-CTA virtual unenhanced images,100 patients in Group A were undergoing head scan both in routine non-contrast program and DE-CTA virtual unenhanced program.Mean CT values,signal-to-noise ratio,image quality,sensitivity of lesion identification,and radiation does were applied to comparison.According to diagnostic results of dual energy of cerebral arterial angiography,62 patients out of 200 patients in Group A were confirmed with cerebral vessel lesions,the results were complied with DSA findings(the time between the two methods were within 1 week).

材料與方法收集2008年3月到2009年1月間在昆明醫(yī)學(xué)院第一附屬醫(yī)院行DSCT CTA檢查者250例(男性146例，女性104例黄片操美女，年齡范圍18-82歲日韩国产欧美精品毛片，平均48歲)，隨機(jī)分為A九九99re热久久久久久精品、B兩組久久久91精品国产一区传媒，A組200例行雙能量頭顱CTA掃描；B組50例行Neuro-DSA掃描黄色网站欧美A。A組前100例按對比劑不同流率和總量分為4組(4.0/60黄色网站一级中文、4.5/60、4.0/70激情你懂的、4.5/70)對圖像質(zhì)量比較欧美一区888视频在线观看；按觸發(fā)時左頸總動脈內(nèi)平均CT位分3組(100—150HU、150—200HU呦福利导航、200-250HU)视频在线免费无码，比較圖像質(zhì)量的差異；對A真人一级黄色视频、B兩組血管圖像質(zhì)量日韩在线观看午夜福利中文、輻射劑量、后處理的方法欧美一级黄色视频A片、掃描和后處理時間及數(shù)據(jù)的容量進(jìn)行比較分析38av视频在线；A組中前100例行常規(guī)與DE-CTA虛擬平掃的平均CT值、信號噪聲比欧美浓毛老太乱人伦视频在线、圖像質(zhì)量A片在线观看网站免费视频、病灶顯示情況、輻射劑量的比較分析中文字幕黄色；A組中行DSA檢查62例(兩種方法間隔時間均1周內(nèi))国产女优视频，比較兩種檢查方法診斷結(jié)果是否符合，并對其中24例動脈瘤行動脈瘤部位国产AV色8X、數(shù)目亚洲综合AⅤ一区二区三区导航、形態(tài)、瘤頸顯示程度国产狼友精品免费视频一二三四区、瘤頸大小及瘤體長徑和短徑的比較研究女生啪啪视频。

The deep temporal fascia and subgaleal tissues are the autologous tissues whose structures are similar to the dura mater. They have enough area and blood supply.

顳深筋膜與帽狀腱膜下組織是自體同部位組織，與硬腦膜組織結(jié)構(gòu)相同欧美动日韩中文，有足夠大的面積和較好的血運(yùn)欧美一级鲁片一区二区三区。

The occurrence of dysphagia is related to the stroke site and dysphagia is a risk factor of SAP.

腦卒中后吞咽障礙的發(fā)生可能與卒中部位相關(guān)，吞咽障礙是卒中相關(guān)性肺炎的危險因素。

Objective To investigate the relationship between the occurrence of dysphagia and the stroke site and analyze the effect of dysphagia on stroke-associated pneumonia.

目的：探討腦卒中后吞咽障礙與卒中部位的關(guān)系生活A片，并分析吞咽障礙對卒中相關(guān)性肺炎的影響亚洲二三区。

Manifestation of crossed paralysis: the middle brain stem, pontine and medulla oblongata classification of dysphonia

交叉癱瘓的臨床表現(xiàn)一级A片一级毛片一级人6，在腦干不同部位的臨床表現(xiàn)久久国产自偷免费播放。

The salesman had arrived with electronics affixed to various parts of his body: a PDA and phone attached to his belt and a Bluetooth ear piece stapled to the side of his head.

當(dāng)那位銷售員到來時，他身體多個部位配帶著電子產(chǎn)品：腰帶上掛著PDA和一部手機(jī)日韩主播欧美精品视频，耳邊別著藍(lán)牙耳機(jī)免费变态视频网站网地址。

And with reference to Figure 1, the treatment line (18) on the plug (10) inserted into the output jack (9), the other side of the two output electrodes, respectively, to insert ear plug mold, patches, foot molds and correct placement in the body or body parts protruding point on.

并參照圖1，將診療線（18）上的插塞（10）插入輸出插口（9）欧美偷操，另一端兩個輸出電極插塞分別插入耳模国产亚洲午夜精品A一区二区、貼片、腳模等欧美福利二区，并將其正確安置在人體凸出部位或體穴上狂野欧美激情性XXXX按摩。