analysis of the effects of multi-population mean test in p. e. scientific research

significance test of difference between the population mean and the standard (standard deviation unknown, one-sided)

均值和标准差的鉴定（未知标准偏差的情况，单侧置信）

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iq scores have a "population mean" of 100.

IQ得分的平均值为100。

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what does a longer-living population mean for relationships and families?

人口寿命的延长对婚姻关系和家庭意味着什么？

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a high-dimension feature spaces clustering and corresponding weather classification for multi-spectral satellite images

多光谱卫星云图的高维特征聚类与降水天气判别

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gearless ultra low speed motor

无齿轮传动超低速电动机

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study and design of speed increasing control circuit of low-speed motor

低速电机增速控制回路的研究设计

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research on saturation influences to an angular servo system driven by permanent magnet low speed motor

永磁低速同步电机角度随动系统饱和特性影响的研究

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you can adjust the high and low speed motor according to individual needs, convenient and quick.

电机高低双速可根据个人及工作需要随意调节，方面快捷；

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no noise: the low speed motor reduced the mechanical vibration, totally solved the noise problem between gear and motor high speed running.

静音：超低速同步电机减少了机械振动，彻底消除齿轮及电机高速运转的噪声。

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brushless motor structure and a similar low-speed motor structure.

无刷电机结构与低速电机结构类似。

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since the cold and continuous low-speed motor running, will be affected due to lack of wind cooling, electrical safety threat to run.

而且自冷电机连续低速运转时，也会因风量不足影响散热，威胁电机安全运行。

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industry: outdoor paint; rust; brick wall; non-slip tiles;

所属行业：室外涂料；防锈漆；墙面砖；防滑砖；；

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industry: anti-fog agent; outdoor paint; interior paint;

所属行业：防雾剂；室外涂料；室内涂料；；

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industry: mosaics; bricks, tiles and blocks; brick wall; outdoor paint;

所属行业：马赛克；砖、瓦及砌块；墙面砖；室外涂料；；

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industry: rust; glazed tiles; outdoor paint; wear resistant tiles;

所属行业：防锈漆；釉面砖；室外涂料；耐磨砖；；

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industry: log; glazed tiles; outdoor paint; brick wall; non-slip tiles; flooring;

所属行业：原木；釉面砖；室外涂料；墙面砖；防滑砖；复合地板；；

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industry: wood paint; magnetic card lock; ic card lock; interior paint; outdoor paint;

所属行业：木工油漆；磁卡锁；IC卡锁；室内涂料；室外涂料；；

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industry: safety signs; other safety equipment; outdoor paint;

所属行业：交通安全标志；其他交通安全设备；室外涂料；；

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industry: outdoor paint; interior paint; wear resistant tiles;

所属行业：室外涂料；室内涂料；耐磨砖；；

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industry: outdoor paint; interior paint; wood paint; phenolic resin;

所属行业：室外涂料；室内涂料；木工油漆；酚醛树脂；；

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