查询词典 decibels

The researchers note that previous studies showed that regular personal stereo use was linked to an average hearing loss of about 3 decibels ,a level of "limited clinical importance."

研究人员注意到，以往的研究表明，经常戴耳机会使听力平均丧失3分贝，这在临床上的影响很小。

The device produces 17.6 kHz of sound ranging from 90 to 100 decibels and, though not detectable to adults, can be intolerable to the ears of a 25-year-old.

该装置能发出频率为17.6千赫、音量为90-100分贝的噪音。这种噪音成人很难听到，但对于25岁左右的年轻人则无法忍受。

Meter-wide tree belt noise can be reduced 10 to 15 decibels.

树林能减少噪音污染。40米宽的林带可减弱噪音10—15分贝。

Using 0.15-micron-gate-length GaAs pseudomorphic high-electron-mobility-transistor device technology, the power amplifier covers the 17 to 25 GHz frequency bands and has a signal gain of 20 decibels with +28 dBm P1dB compression point.

采用0.15微米的高电子移导率场效晶体管器件技术的这一功率放大器的频率范围为17～25 GHz，增益为20分贝(相对+28 dBm P1dB压缩点)。

A study done in Scania, Sweden has found that road noise over 60 decibels can increase the risk of high blood pressure by 25%.

瑞士斯堪尼亚研究发现，马路噪音超过60分贝以后会增加高血压患病风险约25%。

The pump is powered by a Cummins 4BT, turbocharged, 4 cycle diesel engine with a noise rating of less than 100 decibels at ten feet from the unit.

雾泵由可米斯4BT型燃气轮机增压式四冲程循环柴油发动机驱动，在距离该装置10英尺位置，噪声额定值小于100分贝。

Using our standard test tone from a difference of three feet, the speaker was putting out 77 decibels, which is loud enough to be uncomfortable if you're sitting too near the projector.

利用从不同的3英尺标准测试的语调，发言者将进行77分贝，这是很清楚的，足以不舒服，如果你坐在附近的投影机了。

Now the governments in many countries have made laws to control noise and make it less than 85 decibels.

现在在许多国家的政府已经制定法律去控制噪音并使它低于85分贝。

In general,continuous exposure to Sounds of over 80 decibels can be considered dangerous.

一般来说，持续呆在超过80分贝的噪声中被认为是有害的。

In general, continuous exposure to sounds of over 80 decibels can be considered dangerous.

总之，暴露在超过80分贝的环境中就会认为是危险的了。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。