air conduction

Investigation of sensitization fungus of air conduction in air for a year abide with slide glass and culture dish. Result of total 12528 funguses 30. genuses on slide glass.

1990.7.1～1991.6.30日连续曝片、曝皿一年，调查了陕西临潼地区空气中气传致敏真菌，共30种12528个；

As a result of careful checking and testing, Acoustics Pure tone air conduction threshold audiometry For hearing conservation purposes

我念给您听：通过仔细的检查和测验，GB/T7583-1987声学纯音气导听阈测定听力保护用

Survey and Analysis of the Pure tone Threshold of Hearing by Air Conduction for Sonar Trainees

声纳学员纯音气导听力的调查分析

Results ( 1) It was calculated that the mean of air conduction hearing threshold of 500 、 1000 、 2000 、 3000 Hz on audiogram. The mean of the left is 13 dBHL and the mean of the right ear is 12 dBHL.

结果（1）计算听力图上500、1000、2000、3000Hz的平均气导听阈，320例的结果为左耳平均13dBHL，右耳平均12dBHL。

Bone conduction extremely sensitive to sound the feelings of normal people mainly rely on air conduction.

骨传导声音极为敏感,对一般人的感情,主要是靠空气传导.

For 81 ears, laser-assisted tympanostomy with pressure-equalizing tube insertion was performed, the air conduction raised 18.4 dBHL in 3 month follow up.

鼓膜造孔同时置通气管81耳，术后跟踪随访3个月以上，纯音气导听力语频区较术前平均提高18.4dBHL。

Acoustics Pure tone air conduction threshold audiometry For hearing conservation purposes The value of the threshold strain is determined by calibrating the coating.

GB/T7583-1987声学纯音气导听阈测定听力保护用阈值应变的数值是靠对涂层进行标定测出来的。

The paper presents the principle of hearing testing technology, such as air conduction test, bone conduction test, masking technology, double ear sonorous blance, short increment sensitivity index, and the audiometer as hearing testing tool.

本文介绍了主观听力测试中气导听阈、骨导听阈、掩盖、双耳交替响度平衡试验、短增量敏感度指数试验的测试原理，运作过程以及完成上述功能测试的仪器-电子听力计。

Results: 96% ( in 225 ears) were cured by stimulation. Audiometric tests showed that the air conduction threshold in speech frequency was increased 10~ 15dB from base. There was no one decreased.

结果：结果：刺激法修补，225例耳中96%愈合，纯音听力测试，显示语音频率气导阈，在原来的基础上提高10～15db，无一例听力下降者。

Air tube cooler conduction cooling bolometer

管状空气辐射冷却器

Improvement on Air Cooling Efficiency of the Motor Through Changing the Air Conduction Construction of the Fan Cowl

改善风罩的导风结构，提高电机风冷效率

Application of heat exchanger with inorganic heat conduction heat pipe in air preheater

无机热传导热管空气预热器在加热炉的应用

Hearing improvement was especially obvious in the range of high frequencies ( around 4kHz), with Carhart's notch disappeared and air-bone conduction gap became smaller, even vanished, Postoperatively, tinnitus was disappeared in 9 out of 18 ears with this symptom before operation.

术后高频区（4kHz）听力改善明显，卡哈切迹消失，气骨导差缩小或消失。18耳术前耳鸣，9耳术后耳鸣消失。

Influence of chronic sinusitis on air conduction hearing threshold of middle ear

次声频段的听力阈值Air（初三适用）慢性鼻窦炎对中耳听阈的影响