查询词典 rotating speed

Combining Newton two state model with step function,a u nified dynamic model between separation and collision process for the linkage me chanism with clearance connections,and with variable rotating speed of the cran k was developed in the paper.

将阶跃函数与牛顿二状态相结合，考虑曲柄非匀速运转，对含间隙平面连杆机构的副间分离与碰撞过程建立了动力学统一模型，利用该模型，引入粘弹性阻尼被动控制技术，通过算例分析了被动控制的效果。

Extraction conditions of ethanol were optimized by orthorhombic analysis. The best condition: extracting temperature (30℃), extracting time (6h), shakers rotating speed (200 r/min), the ratio between Dictamnus dasycarps Turcz.

通过正交试验对白鲜皮的无水乙醇提取条件进行了优化，确定其最佳的提取条件为提取时间6h，白鲜皮与溶剂质量体积比为1∶10，提取温度30℃，摇床转速200r／min，提取3次。

The tribological behavior of the fluoborate nanoparticles as lubricating oil additive was evaluated by four-ball test machine,where test conditions are following: load 100～ 700 N,rotating speed 1 200 r/min,testing time 10 min.

借助TEM、XRD对表面修饰纳米氟硼酸盐微粒进行了表征，并利用四球摩擦试验机对其用作润滑油添加剂的摩擦学性能进行了评价，试验条件为载荷100~700N，转速1200r/min，时间10min。

The rotating speed and infeed depth of tool wheel are the main technique parameters.

砂轮旋转速度以及工具砂轮的进给量是金刚石砂轮机械精密整形的主要工艺参数。

In this paper, the influence of liquid loadage, rotating speed, xylose concentration and organic nitrogen source on xylose fermentation by Candida shehatae CICC 1766 to produce ethanol were investigated. Besides, ethanol tolerance of Candida shehatae CICC 1766 was studied.

研究了装液量、转速、木糖浓度、有机氮源等条件对休哈塔假丝酵母CICC 1766发酵木糖生产乙醇的影响，探讨休哈塔假丝酵母的乙醇耐受能力。

Results showed that AOT reversed micellar systems provided a suitable micro-environment for biodiesel production. The optimal parameters were: the ratio of water and AOT 11, AOT concentration 50 mmol/L, temperature 40℃, pH 7, molar ratio of methano and oil 3, and rotating speed 180 r/min. The transesterification rate reached 90% when a 3-step methanolysis protocol was used.

研究结果表明： AOT/异辛烷反胶束体系为Candida sp.99-125脂肪酶催化提供了较为合适的微环境，在W0为11，表面活性剂浓度为50 mmol/L，温度为40℃，缓冲液pH值为7的AOT/异辛烷反胶束体系中，醇油摩尔比为3∶1，摇床转速为180 r/min，采用12h3次流加1 mol当量的甲醇，单批最高酯转化率可以达到90%。

The bifurcation and chaos behavior of impact and rubbing fault rotor system caused by the parameters of nonlinear rigidity, rotor rotating speed, eccentric mass is analyzed, in the numerical value analysis method. The bifurcation diagrams, maximum Lyapunov exponent diagrams, Poincaré maps, phase plane portraits, trajectories of journal center, time-history curve, amplitude spectra diagrams of the rotor motion are used. The convert and evolution course of periodical response, quasi-periodical response, double-periodical bifurcation, chaos of the system response is analyzed.(3). It is deduced that the general differential equation of bending-torsional-pendular coupling vibration about rotor with the gyroscopic moment. On the basis of this equation, the general differential equations of coupled bending, torsional and pendular nonlinear vibration about rotor with unbalance character and rubbing character are deduced.

2建立了具有非线性刚度的转子系统在非稳态非线性油膜力作用下的径向碰摩动力学微分方程，并应用含高阶余项的非线性动力方程的线性化数值法研究了此类系统响应的复杂动力学行为，利用转子响应的分岔图、最大Lyapunov指数曲线、Poincaré截面映射、时域波形、相轨线、轴心轨迹、幅值谱等图形分析了系统响应的周期运动、拟周期运动、倍周期分岔、混沌等运动形式的转化与演变过程，重点研究了非线性刚度、转子转速、偏心质量等系统参数对碰摩故障转子系统的分岔和混沌行为的影响。

The optimal cultural conditions for producing phytotoxin were temperature 25℃, pH 6.5, cultured period 9-11d, enough darkness and dissolved O2, rotating speed. Crude toxin was obtained through large scale fermentation.

对培养基条件进行了筛选，确定了有利于该菌产毒的温度为25℃、pH值为6.5、培养时间为9～12天、足够的黑暗以及溶氧、转速等培养条件。

Results By using two-phase solvent systems composed of petroleum ether-ethylacetate-methanol-water (22:25:23:17) at the flow rate of 2.0 mL/min, with rotating speed of 800 r/min, and at temperature of 25℃, the yield of d1-tetrahydropalmatine and of protopine purified from the total alkaloids being 16.9% and 14.7%, with purity of 99.3% and 98.8% respectively can be reached.

结果 石油醚－乙酸乙酯－甲醇－水(22：25：23：17)为溶剂体系，流速为2.0 mL/min，仪器转速800 r/min，温度25℃，从延胡索总碱中可一步纯化得到原阿片碱和延胡索乙素，得率分别为16.9%和14.7%，纯度分别为99.3%和98.8%。

Results: In 2007, we provided 602 SPET/CT services in myocardial perfusion scan for attenuation correction and 202 SPET/CT services in other scans for image fusion. Among 64 regional bone SPET/CT services, we noted 2 (3.13%) significant motion artifacts and 2 (3.13%) streak artifacts induced by beam hardening effect while among 25 Ga-67 local SPET/CT services. According to the features including low tube currents and slow rotating speed of this SPET/CT, some problems such as the patient safety, longer scan time, alignment mismatch and radiation protection would be analyzed and discussed.

结果：2007年804例SPET/CT造影中，602例心肌血流灌注断层摄影进行衰减校正，共202例病例进行影像融合，其中鎝－99m-MDP局部SPET/CT发生「影像上明显可见的移动假影」的比例为3.13%(2/64)，镓－67局部SPET/CT发生移动假影的比钊则为24%(6/25)，因射束硬化效应所造成的条状假影有产生干扰融合影像判读的情形，其他问题包括SPET/CT之CT低管球电压及低转速之机器特性、受检者的安全、较长的造影时间、对位错误及辐射防护筝。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。