1、

Booster compressor noise has the characteristics of wide frequency band, intense low fre-quency sound and considerably high total sound pressure level.

增压机噪声具有频带宽、低频声强烈,且总声级又相当高的特性。

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2、

CT scanning showed the inflated and cystoid low-density spot with bony shell.

CT表现为有骨壳的膨胀性囊状低密度区。

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3、

A high strength insulating brick with high alumina and low iron oxide has been developed by using floating particles and bonding clay as starting material with expanding agents, flux and combustible additives.

以漂珠、结合粘土为原料,加入膨胀剂、助熔剂和可燃加入物.可制得高强、高铝、低铁隔热耐火砖。

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4、

Mechanism and Reliability of Lead Free Joints Fabricated by Low Temperature Ultrasonic Bonding

无铅焊点低温超声互连的机理及可靠性研究

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5、

Finally, the two activated surfaces are joined together in an EVG 501 wafer bonder by applying a modest and uniform contact force at low temperatures, ensuring hermetic sealing of the cavities and preventing destruction or distortion of small features.

最终结果是,在EVG501晶圆键合机上,两个活化的表面在低温下通过施加一个适中的、均匀的接触压力而连接在一起,保证了空腔密封并防止了小结构的破坏和变形。

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7、

Cr-Cu-N films were deposited using low energy ion beam assisted magnetron sputtering ( IBAMS). The effects of copper and bombardment energy on structure, hardness and fracture toughness of the films were studied.

应用低能离子束辅助磁控溅射(IBAMS)沉积铬-铜-氮薄膜,研究了铜含量和轰击能量对薄膜结构、硬度和断裂韧度的影响。

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8、

Analysis and design of a low noise CCD video processing circuit for astronomical camera

天文观测相机低噪声CCD视频处理电路的分析与设计

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9、

Study of Low Dielectric Properties of 7628 Glass Fiber Blended Fabric

7628玻纤混纺织物低介电性能的研究

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10、

For improving heat supplying ability of condensing bleeder turbine, we carried out low vacuum modification in turbines, raised exhaust parameters, and utilized vaporization latent heat of exhaust to heat circulating water of condenser to supply heat to user.

为提高抽汽凝汽式机组的供热能力,对汽轮机组进行低真空改造,提高排汽参数,利用排汽的汽化潜热加热冷凝器冷却循环水,向热用户供热。

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12、

Moreover, the error due to Gaussian approximation becomes significant only for systems with low number of pulses per information bit.

对于每个信息比特有较少的脉冲的系统来说,类高斯噪声所产生的错误就变得非常重要。

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13、

The standard ATM Adaptation Layer 2 ( AAL2) which is designed to improve the bandwidth utilization for delay sensitive low bit rate traffic, has found wide applications to tactical ATM communication networks.

AAL2是为了满足对时延敏感的低速率或可变速率的短分组业务需求而提出的一种组合信元ATM适配技术,在战术通信网中也得到了应用。

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14、

To improve beamforming under low signal-to-noise ratio, a method based on stochastic resonance ( SR) in a bistable model is investigated by using a frequency scale transformation method.

为了改善低信噪比下波束形成的性能,从双稳态随机共振模型出发,提出了利用频率尺度变换,将随机共振和波束形成结合起来的算法。

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15、

A low-lying region of west central France on the Bay of Biscay.

法国中西部一低洼地区,濒临比斯开湾。

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16、

The observation of the bird nest type nursing using in the low birth weight premature infant

鸟巢式护理应用于低出生体重早产儿的观察

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17、

The response of wood/ bark properties of red birch seedlings to elevated CO2 ( EC) under low ( LD) and high density ( HD) were investigated in closed top fumigation chambers ( CTC).

研究了高(HD)、低(LD)两个种植密度下红桦幼苗的树皮和去皮树干特征对CO2升高的响应。

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18、
19、

It Consists of bidirectional switch and zero current switching control technique to achieve on time rectification in the primary circuit. High power factor, high efficency and low THD have been obtained.

电路采用零电流转换方式进行控制,并采用双向开关实现了电路初级的同期整流,从而实现了高功率因子、高效率和低高次谐波的功率因子改善电路。

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20、

The low content of clay is the main reason that the performance of the soil stabilized with inorganic binder is poor.

研究认为,粘粒含量低是无机结和料稳定该类土性能差的主要原因。

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