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Sensor less blushless direct current motor is the prospect of brushless direct current motor, however, the key factors which rotor position estimation can be diffcultly gotten at standstillor low speed limit brushless motors use.

位置传感器刷直流电机是刷电机的发展方向。

According to the deformation coordination of baffle and turbine,the relational equation of rotational speed,fore-and-after pressure difference of boltless baffles and available pressure was con.

利用最小二乘法拟合出上述变化规律的方程,通过涡轮与螺栓挡板之间的变形协调关系,归纳出转速、螺栓后挡板前后气体压力差和螺栓挡板能提供的压力这三者关系方程

The results showed that the dipped 500dtex nylon 6 bristlelike monofilament net fabric could be used instead of the bead flippers and chafers in 18.4-26 12PR tubeless agricultural tire with R4 block tread patterns,18.00-25 32PR tubeless OTR tire with general block tread patterns and ST205/75D15 6PR tubeless trailer tire to ensure the air tightness of tire,significantly improve the appearance,increase the productivity and decrease the production cost.

结果表明,以500dtex锦纶6浸胶鬃丝网眼布替代胎圈密封胶和胎圈包布应用于18.4-26 12PR块状R4花纹内胎农业轮胎、18.00-25 32PR通用块状花纹内胎工程机械轮胎和ST205/75D15 6PR混合花纹内胎挂车轮胎,在确保轮胎气密性的前提下,可显著改善胎圈外观质量,同时可提高劳动效率,降低生产成本。

In the test 5 treatments of single-sowed alfalfa or smooth brome grass, and their mix-sowing with different ratios of 50%+50%, 60%+40% and 70%+30% were set up to analyze pH, CP, NDF, ADF, acetic acid, butyric acid, lactic acid and total acid of the silage in each treatment and study the effect of alfalfa and smooth brome grass with different mix- sowing ratio on silage quality.

方法]试验设5个处理,即紫花苜蓿单播、芒雀麦单播、紫花苜蓿+芒雀麦以50%+50%、60%+40%和70%+30%比例混播,分析各处理青贮材料的pH值、CP、NDF、ADF、乙酸、丁酸、乳酸和总酸的变化,研究芒雀麦与紫花苜蓿不同比例混播对青贮品质的影响。

Seawage sludge from Lanzhou Qilihe sewadge purification factory was applied onto Bromus inermis grassland during 1996 and 1998 with three years monitoring, aboveground yield increase on Bromus grassland with appropriate sludge application was 163~203 percent in 1996, 41~120 percent in 1998. Root biomass increase in 1996 was 35~106 percent higher than the control.

为此,笔者於1996~1998年将兰州市七里河区污水处理厂生活污泥施於芒雀麦人工草地。3年来对芒雀麦和土壤进行多项监测,结果表明,施用适量污泥对芒雀麦地上生物量增产幅度显著,1996年为163%~203%;1998年为41%~120%。1996年总根量比对照高35%~106%。

Results showed:(1) The airway responsiveness of smoke control group was higher than that of normal control group, the airway responsiveness of smoke + exercise group was lower than that of smoke control group;(2) Plasma level of cortisol determined immediately after exercise was higher than that determined before exercise, no significant difference occurs between that determined next day morning after all exercise finished in contrast to that determined before exercise;(3) HE staining showed, there was severe chronic pulmonary inflammatory response in smoke control group, which was reduced in the smoke + exercise group;(4) chronic cigarette smoke downregulated the protein and mRNA expression of BKca in smooth muscles of bronchi and bronchioli, exercise increased the mRNA expression of BKca;(5) chronic cigarette smoke downregulated the protein and mRNA expression of Kv1. 5 in smooth muscles of bronchi and bronchioli, exercise increased both the protein and mRNA expression of Kv1. 5 in contrast to smoke control group in bronchioli and did not effect the expression of Kv1. 5 in bronchi;(6) chronic cigarette smoke induced upregulation of FIZZ1/RELMα in bronchial smooth muscle cells, exercise decreased these effect.

结果:(1)吸烟对照组的气道反应性明显增高,吸烟加运动应激可明显降低大鼠的气道反应性;(2)吸烟运动组运动后血浆皮质醇浓度明显高于运动前,但全部运动结束后次日晨测定的血浆皮质醇浓度与运动前明显差异;(3)HE染色显示,吸烟对照组肺组织出现明显的慢性炎症反应,吸烟加运动应激组比吸烟对照组炎症反应轻;(4)慢性吸烟可降低大鼠大气道和小气道BKca mRNA和蛋白表达,而吸烟加运动应激可使BKca mRNA表达上调,但对小气道的蛋白表达影响;(5)慢性吸烟可降低大鼠大气道和小气道Kv1.5蛋白和mRNA表达,在小气道吸烟加运动应激可减轻这种作用,大气道则作用;(6)吸烟使支气管平滑肌的FIZZ1/RELMα蛋白表达明显增强,而吸烟加运动组的RELMα蛋白及mRNA均明显减弱。

By comparative analysis of applicability, we concluded that the microcapsule from sodium alginate used in carbonless copy paper had the same advantages as domestic and foreign抯 in the characteristic of use, stableness and the speed of color development and so on.

证明了以海藻酸钠为壁材单凝聚法制备的碳复写纸用微囊具有较高的包埋率、不渗透性、稳定性及一定强度;通过应用性的对比分析,认为以海藻酸钠为壁材自制的碳复写纸用微囊在使用性能、稳定性、显色速度等方面均可达到国内外碳复写纸的水平。

In RCC, there was significant correlation between the expression of survivin and lymph node status, but no association between the expression and some clinical characters, including patient age, sex, tumor size and carcinomatous embolus status in inferior vena cava.

肾癌中Survivin蛋白的表达与患者有淋巴结转移、肾癌的病理分级呈正相关(P.05),而和肾癌患者的年龄、性别、肿瘤大小及有下腔静脉痛栓、肾癌患者的Robson分期及肿瘤的病理类型显著相关性。

Methods: form january 1995 to january 2005, 42 patients with acute respiratory failure (acute respiratory failure group) and 84 random sampling after esophagectomy and cardiectomy were studied. age, sex, smoke index, preoperative respiratory function, preoperative pulmonary and the other complications, hypoproteinemia, the site of anastomosis, duration of operation, postoperative analgesia, postoperative other complications were compared by logistic regression analysis.

将1995年1月~2005年1月期间食管癌、贲门癌术后发生arf的42例患者临床资料,与按1∶2比例随机抽取的同期手术后未发生arf的84例食管癌、贲门癌患者的资料做对照,应用logistic回归分析比较两组患者的年龄、性别、吸烟指数、术前肺功能、术前有肺部合并症和其它合并症、术前有低蛋白血症、吻合口位置、手术时间、术后是否镇痛、术后有其它并发症等与术后发生arf的相关强度,推测可能导致术后arf发生的危险因素。

The effect of refined cotton,carbon fiber content and length on the safety of caseless ammunition and self-ignition temperature of simulating bore test was analyzed by testing the ignition point of 5 s delay of the propellants containing carbon fiber or refined cotton,impact sensitivity and temperature of simulating bore test.

为了研究含有纤维的壳弹发射药安全性,通过测试含有碳纤维素或精制棉的壳弹发射药5s延滞期爆发点、撞击感度和模拟枪膛试验的自燃温度,分析碳纤维含量、长度和精制棉对壳弹发射药安全性能和模拟枪膛试验的自燃温度影响。

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And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时,论述了一体化管理体系构建中的几个主要问题,包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。

If you're huffing and puffing at any point during the run, slow down and make sure you can take deep breathes.

如果你任何时候在跑步过程中气喘如牛,降低速度并且确保你能够深呼吸。