产生金属的

First it produces the pulse signal by the multivibratorwhich is consisted of 555 timer and send in the detecting coil to form the alternating magnetic field, then it asopts UGN3503 linear half-effect as prode to the magnetic field change into the voltage signal change,after enlargement electric circuit and peak value examination electric circuit,the signal be treated to send into ADC0809 modulus converter change moduluses, then the digital signal after the modulus converter is changed is sent into AT89C51one-chip computers afterwards, after the digital filter, AT89C51one-chip computers afterwards compares the data to the reference voltage and judges whether to have detected the metal and alarm.

这个系统是以AT89C51单片机为核心，首先由555定时器构成多谐振荡器产生脉冲信号送入探测线圈以形成交变磁场，然后经过线性霍尔器件UGN3503将磁场变化转换为电压信号的变化，经过放大电路和峰值检测电路，经数模转换之后输入到单片机中，由单片机对数据进行软件滤波之后，与基准值比较之后，判断是否存在金属和报警显示。

One of the important factors to form chelate is there should be enough atoms to coordinate with metal ion.

而要形成螯合物其中有一个因素非常重要，就是金属离子周围必须有足够的原子与它产生配位。

We all know that if there are metal ions stable existed in protein, the metal ions should form chelate.

我们知道若是要让金属离子稳定的存在在蛋白质中，必须产生螯合物。

To solve the problems of the limescale ,the oxidation which are produced by the direct contact between a metallic conductor and water, the detecting reliability and the service life, the utility model adopts the technical proposal as below: the proposal comprises a monostable controllable trigger, a second low-pass filter, a voltage follower and a display circuit, the power circuit links with the monostable controllable trigger, the second low-pass filter, the display circuit and a timebse pulse circuit separately, the utility model is characterized in that the monostable controllable trigger, the second low-pass filter and the display circuit sequentially links, the monstable controllable trigger separately links with a water lever sensor and the timebase pulse circuit.

为了解决金属导体与水直接接触会产生水垢和氧化，影响检测可靠性和使用寿命的问题，本实用新型采用了以下技术解决方案：它包括单稳可控触发器，二阶低通滤波器，电压跟随器和显示电路，电源电路分别与单稳触发器，二阶低通滤波器，显示电路和时基脉冲电路相接，其特征在于单稳可控触发器，二阶低通滤波器，电压跟随器和显示电路依次相接，单稳可控触发器分别与水位传感器和时基脉冲电路相接。

To solve the problems of the limescale ,the oxidation which are produced by the direct contact between a metallic conductor and water, the detectingreliability and the service life, the utility model adopts the technical proposal as below: the proposal comprises a monostable controllable trigger, a second low-pass filter, a voltage follower and a display circuit, the power circuit links with the monostable controllable trigger, the second low-passfilter, the display circuit and a timebse pulse circuit separately, the utility model is characterized in that the monostable controllable trigger, the second low-pass filter and the display circuit sequentially links, the monstable controllable trigger separately links with a water lever sensor and thetimebase pulse circuit.

为了解决金属导体与水直接接触会产生水垢和氧化、影响检测可靠性和使用寿命的问题，本实用新型采用了以下技术解决方案：它包括单稳可控触发器、二阶低通滤波器、电压跟随器和显示电路，电源电路分别与单稳触发器、二阶低通滤波器、显示电路和时基脉冲电路相接，其特征在于单稳可控触发器、二阶低通滤波器、电压跟随器和显示电路依次相接，单稳可控触发器分别与水位传感器和时基脉冲电路相接。

Product principle of this device is the use of high-frequency discharge welding Materials technology will instantly melt infiltrated matrix material, a new technology, because it is instantaneous discharge, do not produce heat, the metal matrix without any impact on organizations.

产品原理本设备是利用高频放电技术将焊补材料瞬间熔渗进基体材料的一种新型工艺，由于是瞬间放电，不产生热量，对基体金属组织无任何影响。

And electricity conduction, malleability, ductility, high light reflectivity , and capacity to form positive ions

金属： 具有高电导率、高热导率以及可塑性、延展性和高反光性的物质，在溶解时可以形成正离子和氢氧化物，其氧化物在遇水时并不产生酸。

In fact, he and Hetfield had clashed over whether he should pursue other projects at the same time as being in Metallica.

事实上，他和赫特菲尔德就他是否在隶属于"金属乐队"的同时应该从事其它活动而产生了冲突。

The process of making a ship's hull nonmagnetic by producing an opposing magnetic field.

通过产生一个逆磁场而使金属船体不具有磁性的过程。

An extremely hot flame can be produced from an oxyacetylene torch. For certain welds an electric arc is used.

氧乙炔焊炬可能会产生极其热的火焰，对于某些焊缝来说可能会用到电弧，在此方法中，电流通过两个电极，并且金属表面被置于两电极之间。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了