By using the role and the drafting methods, projective contour line of a quadric at random position can be drawn.
利用这一规律和作图方法，可以解决任意位置的非退变二阶曲面的投影轮廓线的作图问题。
Methods By random sampling method, 9 refectories and 366 students usually having their lunch at schools were drawn from Fangshan District, an anonymous questionnaire survey was conducted among them.
方法采用随机抽样的方法，对房山区9所中小学校食堂及366名在校就餐的学生进行膳食及营养教育相关情况的问卷调查。
Methods 16 dogs with inhalation injury from steam were divided into control group and treatment group at random.
方法将16条犬经蒸气吸入造成吸入性损伤模型，并随机分为两组：即对照组和治疗组。
Methods 16 dogs with inhalation injuries from steam were divided into control group and treatment group at random.
方法将16条犬经蒸气吸入造成吸入性损伤模型，并随机分为两组，即对照组和治疗组。
Methods 70 senile patients with peptic ulcer were divided into ligustrazine group (35 cases) and control group (35 cases) at random.
方法将70例老年消化性溃疡患者随机分成川芎嗪组(35例)和对照组(35例)。
Methods: Divide all HPH cases into two groups at random, 28 cases in Feiyanping group and 19 cases inNifedipine group as contrast.
方法：低氧性肺动脉高压症患者随机分为两组，28例用肺压平复方治疗，19例用硝苯地平治疗，两组进行观察对比。
Methods A random cost function model was built by means of data from hospitals at county level and above in Weihai.
方法利用威海市县及以上医院的数据建立随机成本函数模型。
Methods 58 cases were divided at random into two groups: experimental group (32 cases) treated with estrogen, flufenamic acid, and furadandin.
方法将58例绝经期尿路感染妇女随机分为两组：实验组32例，采用尼尔雌醇、氟哌酸胶囊、呋喃旦啶治疗；
Methods In each province, 3 counties were selected at random in each prefecture, 1~3 villages were selected at random, total 30 village were selected.
方法各省在每个地级行政区划单位随机抽取3个县，每个县随机抽取1～3个行政村，全省总数不少于30个。
Methods By the SCL-90 and EPQ, a sample of 470 peasant workers selected from four northeastern cities at random were tested and compared to usual models.
方法采用SCL- 90、EPQ，随机抽取东北地区四个城市470名民工进行调查，并与国内常模进行比较。
Methods: the coiled shapes of Trichinella isolated ML were observed under microscopes, then the lengths and widths of ML encystment (encysted index) were measured at random by micrometer.
方法：镜下观察旋毛虫幼虫卷曲状态，用测微尺随机测量囊包长、宽。
Methods: Divided 50 patients into a Rifampicin group and a norfloxacin group at random, and used the data from these two groups to do statistics analysis.
方法：50例急性菌痢患儿随机分成利福平组和诺氟沙星组，进行两组疗效比较和统计学处理。
METHODS: A total of 478 children at age of 9-12 years from Tulufan City and Buerjin County of Xinjiang Province were enrolled by random cluster sampling.
方法：分别在新疆吐鲁番市区和布尔津县两地采用随机整群抽样的方法，抽取9~12岁儿童478名。
This paper introduces several methods to generate random Numbers and their advantages and shortcomings, and at last realizes the application of random Numbers in the field of "online lotting system".
本文介绍了几种常见随机数的产生方法以及其优缺点，最后实现了“在线抽签系统”中的应用。
Methods A total of 106 DCM patients with heart failure were allotted into trial group and control group at random.
方法将106例患者随机分为两组，在常规抗心力衰竭基础上，渝疗组加用二丁酰环磷腺苷钙静脉给药；
Methods 3 communities from Wuhou District were chosen at random and the teeth wedge-shaped defects of the aged were investigated.
方法随机抽取的成都市武侯区三个居（家）委会的老年人楔状缺损进行调查、分析。
Methods Serological samples were collected in the forest area in Changbai and Tonghua. Ticks and rats were captured at random sites.
方法在长白及通化县林区采集人群血清，并随机选择采样点进行捕蜱、捕鼠。
Methods : 60 cases were selected, and were divided into two groups at random. 30 cases were treated with Du-moxibustion, while the other 30 cases, as Control group, were treated with acupuncture.
本课题筛选强直性脊柱炎脊柱畸形患者60例，随机分为两组，设督灸组30例为观察组，针刺组30例为对照组。
Methods Observing and comparing the morphological change of Radix Achyranthis Bidentatae between bud picked groups and control groups in a random and at regular intervals time test.
方法摘芽后定期进行随机取样，并与对照组进行观察测量比较，追踪牛膝根外部形态的变化。
Methods: Clinical analysis was made at random in 350 cases of parturition by using artificial abortion in contrast with 380 cases of parturition by no use of artificial abortion.
方法：对我院产科分娩中有人工流产史的350例进行临床分析，并以同期无人工流产史的380例作随机对照组。
Method: 43 cases oral cancer divided into groups at random according to the methods of how to use Pingyangmycin.
方法：43例病人随机分为两组，分别以静脉滴注和局部病灶内浸润注射给药。
Methods: Adopting the methods of whole group sampling at random, study on 306 children aged 4-6 of 14 kindergartens in Jing an District of Shanghai.
方法：采用随机整群抽样方法，在上海市静安区抽取14所幼儿园306名4 ~ 6岁儿童进行了研究。
Methods: Normal cases compensated cirrhosis and decompensated cirrhosis each 100 cases respectively were selected at random.
方法：随机选择正常肝脏、代偿期和失代偿期肝硬化各100例。
Methods Divide them into two groups at random: the treatment group using Ornidazole calcium hydroxide; and the comparative group using Camphor phenol.
方法通过随机分为两组，治疗组奥硝唑氢氧化钙糊剂组，对照组樟脑酚组。
The random response method for soil-structure interaction system is studied systematically at this dissertation, and the Suggestions and treating methods about the practice application are proposed.
本文详细地研究了土与结构相互作用体系随机地震反应分析方法，并对该方法的实际应用中的一些问题提出了作者的一些见解和处理方法。
Methods: to divide 108 patients with colostomy into two groups at random. 54 cases of them were given lavation by balloon irrigator, and the other 54 cases given routine nursing.
方法：将108例结肠造口患者，随机分为灌洗组54例，用气囊灌洗器进行灌洗，对照组54例使用造口袋常规护理。
Methods The questionnaire survey forms were filled out on-the spot by 1800 residents who were at random selected.
方法采取现场无记名自主填写调查表，对应用二阶段抽样法随机抽取的1800名社区居民进行调查。
Methods We used Symptom Checklist 90(SCL-90) and 16-personality test list proposed by Carter to evaluate 200 anti-terrorism armed policemen and 100 ordinary armed policemen at random.
方法采用症状自评量表（SCL-90）和卡特尔16种人格测试量表随机抽取武警某部反恐分队官兵200名和普通官兵100名进行了调查分析。
Methods: we select each technician's X-ray film works at random, shielding the date, the number and other signals that help to identify, then assess collectively.
方法：抽取每位投照技师一定数量照片，遮盖投照日期、X线号等可辨认标志，集体阅片对每张胶片图像质量进行评比打分。
Methods: we select each technician's X-ray film works at random, shielding the date, the number and other signals that help to identify, then assess collectively.
方法：抽取每位投照技师一定数量照片，遮盖投照日期、X线号等可辨认标志，集体阅片对每张胶片图像质量进行评比打分。
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