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空载噪声
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  no load noise
     Slot combination of YB range of motors(frame sizes 315 to 355,4 pole)is set from 72/64 to 72/63. Although no load noise does not change obviously,the abnormal birdie phenomenon in the load noise of the motor is eliminated. This method is simple,quick,and efficient,and has obvious effect.
     YB31 5~ 355— 4 p电动机的槽配合由 72 / 6 4调整为 72 / 6 3,空载噪声虽无明显变化 ,但消除了负载噪声中的异常尖叫现象 ,措施简单、快捷、经济 ,效果明显
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  “空载噪声”译为未确定词的双语例句
     The paper also determines the idle noise curve of the reducer, which does not exceed 60dB (A) at 1100 r/min.
     当转速在1100 r/min以下时,空载噪声不超过60 dB(A);
短句来源
     Noise Measure and Uncertainty Evaluation Based on Quick Positioning Vertical Multi-spindle Multi-blade Finish Milling Machine
     快速定位立式多轴多锯片精铣机空载噪声测量及不确定度评估
短句来源
     The whistling noise during idling is often more intense than during cutting, and may be more 20dB(A) than the aerodynamic noise. The whistling noise shows a directivity different from that of a non-resonant noise.
     当空载圆锯片产生“啸声”时,其空载噪声比负载噪声还要刺耳,且最大可超出空气动力性噪声达20dB(A)。
短句来源
     The testing results showed that the unloaded running noise source of precision panel saw was mainly from main saw blade and its aeromechanic noise was the largest.
     测试结果表明精密裁板锯空载噪声源主要来源于主锯片,它的空气动力性噪声是最大的。
短句来源
     The rotating speed was determined as an important factor to impact dynamic characters of precision panel saw as the unloaded running noise increased along with speed increasing.
     因为空载噪声随着速度而增加,所以旋转速度是影响精密裁板锯动态特征的一个重要因素。
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  相似匹配句对
     Calculation of Machine Tool Idel-Run Power and Noise and its Application
     机床空载功率和噪声的计算及应用探讨
短句来源
     A recommended acceptable noise level can be determined from the teacheras response to the noise under investigation.
     噪声调查;
短句来源
     WHITE NOISE
     白噪声
短句来源
     Discussion of Reducing the No-Load Loss and the Noise for Step-Laminated Core Transformer
     “阶梯叠”铁心变压器降低空载损耗和噪声的探讨
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The involute point—engaged gear drive is called JDC in short. This paper determines both the performance target of the reducer of JDC gear and the efficiency Of speed reduction. Two efficiency curves are drawn. The efficiency of the reducer goes over 97% at rated power. Therefore, the engagihg efficiency of the gear pair exceeds 98%. The paper also determines the idle noise curve of the reducer, which does not exceed 60dB (A) at 1100 r/min. Frequency analysis is done. when different loads are measured by a frequency...

The involute point—engaged gear drive is called JDC in short. This paper determines both the performance target of the reducer of JDC gear and the efficiency Of speed reduction. Two efficiency curves are drawn. The efficiency of the reducer goes over 97% at rated power. Therefore, the engagihg efficiency of the gear pair exceeds 98%. The paper also determines the idle noise curve of the reducer, which does not exceed 60dB (A) at 1100 r/min. Frequency analysis is done. when different loads are measured by a frequency speetrograph at the same revolution, the engaging gear frequency curve at high speed does not exceed 65dB (A) at rated power. Tests show that this kind of drive is of high efficiency with lower noise.

本文对渐开线点啮合齿轮(JDC)·传动减速器的性能指标,进行了试验测定。在额定功率时,减速器效率可达97%以上,因而齿轮副的啮合效率达98%以上;当转速在1100 r/min以下时,空载噪声不超过60 dB(A);在转速为1185 r/min时,由频谱仪测试不同载荷时的噪声、频谱分析表明:在额定功率时其噪声不超过65 dB(A)。通过试验研究证明:JDC是一种高效率、低噪声的齿轮传动。

Characteristics and the relationship between magnetic noise and load noise of cagerotor induction motors are discussed in this paper. Some methods to control the magneticnoise are expounded. A number of stator slots and rotor slots,which are scarcely usedand recommended to be used,are adopted by the writer. And lower noise three-phasecage rotor induction motors are designed and manufactrued. The calculation results ofmagnetic noise and test data of no-load noise for the prototypes are given.

本文首先讨论了笼型感应电动机的电磁噪声和负载噪声的关系及特点,然后论述了控制电磁噪声的若干措施.并首次采用了几种目前不被人们采用和推荐采用的槽配合.设计和制造了低噪声笼型三相感应电动机.给出了电磁噪声的计算值和空载噪声试验结果.

Slot combination of YB range of motors(frame sizes 315 to 355,4 pole)is set from 72/64 to 72/63. Although no load noise does not change obviously,the abnormal birdie phenomenon in the load noise of the motor is eliminated.This method is simple,quick,and efficient,and has obvious effect.

YB31 5~ 355— 4 p电动机的槽配合由 72 / 6 4调整为 72 / 6 3,空载噪声虽无明显变化 ,但消除了负载噪声中的异常尖叫现象 ,措施简单、快捷、经济 ,效果明显

 
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