查询词典 tungsten filament

Solid carbide tungsten fishtail drill is suitable for pcb flexible foil clad laminate,used for target machine drilling,the features of pcb fishtail drill are thin and flexible plate,it's structure and cutting methods are different with normal pcb drill bits.its two main cutting edge is concave and formed 100degree angle,in order to distinguish with PCB drill,named fishtail drill.fishtail drill cuts beginning of circular drill.concave along the main cutting edge to cut,chip is just two much fine filament.cuttingis falling off naturally,in order to be processed without burrformation by pcb surface.

整体硬质合金鱼尾钻适合印制电路板行业加工挠性覆箔板，为打靶机钻孔用。鱼尾钻所加工的印制电路板特性是薄板、带柔性、这样就决定了它的结构和切削方式与一般PCB钻不一样，它的两主切削刃是内凹的，两主切削刃形成100度的夹角，为了与PCB钻区别，就叫它鱼尾名。鱼尾钻切削时从我圆处钻尖开始，沿着内凹的主切削刃切削，切屑只是两条极细丝状切削，整个切削自然剥落，从而被加工印制板表面平整无毛刺。

It is a function of how fast the tungsten evaporates from the filament.

它是作用是表征钨从灯丝蒸发的速度。

Lin Jingshan the company's Chief Engineer had personally on three of the heater heating method (commonly known as Little Miss Sunshine) to compare the speed of the hot and cold: The hand on heater in front of about 60 centimeters, to be followed by access to power: iodine-tungsten lamp quartz tube the thermal radiation immediately communicated to the hand; electric heating film about two to three seconds will be communicated to the hot hand; and the hot filament resistance will require more than 6 seconds.

该公司总工程师林景山曾亲自对三种加热方式的取暖器的冷热速度进行比较：将手放在取暖器前方60公分左右，然后依次接通电源：石英碘钨灯管的热辐射即时传达到手上；电加热膜约二、三秒钟将热传达到手上；而电阻丝加热的则需要6秒以上。

Less a horseshoe nails, horse suddenly fell in the trenches, so the battle will fail; a tungsten filament lamp burned down, the whole room would be a pitch-black; pen nib on the core lost a small bead on the re - also he could not write words.

马掌少了一颗钉子，马会在战壕中突然摔倒，以致整个战斗都会失败；电灯烧毁了一根钨丝，整个房间就会一片漆黑；圆珠笔芯掉了笔尖上的小圆珠，就再也写不出字来。

W8 g 1.12 局部照明灯泡 tungsten filament lamp for localized lighting

a- Z： y4 ？8 X3 |9 u a2 N 用于局部安全照明的白炽灯泡，其灯电压在36V以下。

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。