查询词典 systematic sampling

An indicator sampling method is proposed for visualizing a three dimensional penetrable obstacle from a knowledge of far field data for time harmonic acoustic scattered waves.

提出了用时谐声散射场的远场信息来可视化三维可穿透目标的一种指示器样本方法，它是通过析取一个指示器函数在包含可穿透目标的某个样本区域中的支集来实现这种可视化的，其中，这个指示器函数在可穿透目标的内部和外部有显著不同的取值。

According to a CNN/Opinion Research Corporation survey released Monday, 51 percent of the public consider China a military threat, with 47 percent disagreeing. That 4-point margin is within the poll's 4.5 percent sampling error.

根据CNN/观点研究公司周一发布的数据，51％的民众认为中国是一个军事威胁，而47%的民众对此不予认可。4％的误差率正好处于该项民意调查的4.5％的抽样误差率中。

Methods: A recently deeloped method of sampling perilymph from the cochlear apex of guinea pigs was used in which the samples represent fluid originating from different regions along the scala tympani.

一种最近发展的从豚鼠耳蜗顶部进行外淋巴液采样的方法被应用于该项研究，采取这种方法可以获得代表沿着鼓阶不同区域产生的液体的样本。

By using this method,9 switching states were ensured during a sampling period of the matrix converter,and the duration of each switching st...

实验结果表明，采用提出的空间矢量脉宽调制优化调节策略，不仅消除了输出电压中的错误脉冲，而且降低了输出电压的总谐波畸变率，在输出频率为15Hz时，THD降低约15%，有效地提高了矩阵式变换器的输出波形质量，保证了系统的安全可靠运行。

The main products are: Hammer, thermal conductivity detector, permeameter, contraction of the expansion device, hand-held strain gauge, waterproof material detector, low-bending device, slag ball content in separators, heat load tester, performance test combustion furnace, a variety of thickness, thermal expansion of graphite electrode NG, coal strength meter, electric tamping device, hydrophobicity tester, mineral wool density meter, concrete drilling sampling machines, sawing machines, removed machine, setstube machine, hydraulic bending machine, impervious tester, determination of heat resistance, heating telescopic measuring device, an extension device, penetration tester, small meter, viscometer, drying time tester, pencil hardness tester, pendulum hardness, the adhesion tester, film zoned grid, and resistant to scrubbing detector, solvent resistance detector, wearable device, flat grinding device, wear-resistant coating shakeout device, staining resistance tester, impact tester , piercing instrument, instrument bending film, film coating, and sanding machines, cone-shaped grinding, high-speed dispersion machine, three roller grinder, Scratch tester, indentation tester, gloss Miriam, white tester, fresh video of Miriam, Miriam reflectivity, iron cobalt colorimeter, paint density cup, crack resistance testing apparatus, leveling device, flow hanging device, visual color box, the minimum temperature detector into a grinding, low temperature brittleness tester, visual color boxes, electronic pull machine, Mooney Viscometer, vulcanizing device, the proportion of direct-reading, the cold compression tester, heritage wearable device, Heritage scratch device, the friction coefficient detector, coating Detect zoned grid plate , coating resistance tester, such as burning a variety of test equipment.

主要产品有：回弹仪、导热系数测定仪、渗透仪、收缩膨胀仪、手持应变仪、防水材料检测仪、低温弯折仪、渣球含量分离器、热荷重试验仪、燃烧性能试验炉、各种测厚仪、石墨电极热膨胀仪、煤强度测定仪、电动击实仪、憎水性测试仪、矿棉容重测定仪、混凝土钻孔取样机、锯切机、磨平机、套丝切管机、液压弯管机、不透水试验仪、耐热性测定具、加热伸缩测定器、延伸仪、针入度仪、细度计、粘度计、干燥时间试验器、铅笔硬度计、摆式硬度计、附着力测试仪、漆膜划格器、耐洗刷测定仪、耐溶剂测定仪、耐磨仪、平磨仪、涂层落砂耐磨仪、耐沾污测试仪、冲击试验仪、穿孔仪、漆膜弯曲仪、涂膜涂布器、砂磨机、锥形磨、高速分散机、三滚研磨机、划痕试验仪、压痕试验仪、光泽仪、白度仪、鲜映性仪、反射率仪、铁钴比色计、涂料密度杯、抗裂性试验仪、流平仪、流挂仪、目视比色箱、最低成磨温度测定仪、低温脆性试验仪、目视比色箱、电子拉力机、门尼粘度仪、硫化仪、直读比重计、压缩耐寒试验仪、文物耐磨仪、文物划痕仪、摩擦系数测定仪、涂层检测划格板、涂层耐燃烧试验仪等多种试验仪器。

The copper pipe with the minimum inside diameter of 10mm is stretched from the relay to gas sampling petcock which is installed on the side face of transformer and can be touched in the ground.

最小内径为10mm的铜管从继电器一直延伸至安装在变压器箱侧面上、从地面上即可接触到的气体取样小活栓。

He'll never consent to petrosal vein sampling.

他绝不会同意岩静脉取样

AIM: To discuss the use of inferior petrosal sinus sampling in distinguishing between pituitary and ectopic sources of adrenocorti cotropindependent Cushing syndrome.

R%E9X2DD2{；l0 目的：探讨岩下窦静脉取血在鉴别垂体和异位来源的ACTH依赖性Cushing综合征的意义。

Bilateral inferior petrosal sinus sampling is considered the gold standard for establishing the origin of ACTH secretion, and it is recommended in patients with ACTH-dependent Cushing's syndrome whose clinical, biochemical, or radiological studies are discordant or equivocal.

双侧岩下窦取血法被认为是确定ACTH产生来源的金标准，推荐用于ACTH依赖性库兴症患者，这些患者往往临床，生化和放射性检查结果不一致或可疑

And it can be proved that under the condition of complete alternation sampling, this new method can realize the accurate extraction of the phase angle of fundamental wave.

分析表明，在信号整周期采样的条件下，该算法可以实现工频基波相位信息的精确提取。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。