进线

The cutting experiment of silicon and ceramic using fixed diamond endless wire saw was done.

利用环形固结金刚石线锯在恒压力进给情况下对单晶硅与陶瓷进行了切割实验。

According to the project practice of pumps in Yu-zhong Steelworks, this paper put forward some water hammer preventive measures of long distance pipe pump station of water supplying, such as the multifunction controlling valve of the water pump, one-way surge tank and vent valve, etc.

根据水锤计算的特徵线法，建立了泵出口附近设单向调压塔水锤计算的数学模型，结合榆中钢厂供水泵站的工程实际，提出了长管道供水泵站采用多功能水泵控制阀、单向调压塔、进排气补气阀对事故停泵水锤的防护措施。

Guangxi Yantan turbine diameter 8m 90s in the 20th century in operation, mainly due to the hydraulic design and manufacturing quality Runner and other reasons, put into operation a serious vibration, cracks, vibration tube into the door crack, power generation Floor Vibration machine layer. 10 years of annual repair cracks, cavitation, multiple blade line has been restored can not be guaranteed, for the more radical change in this situation, has on one desktop PC upgrades, replacement of the old wheel, replaced by a Taiwan new designs, new technology a new wheel, troubled years of generating station floor floor vibration problems are basically solved.

广西岩滩水电站直径达8m的水轮机在20世纪90年代投入运行，主要是由于水力设计和分瓣转轮制造质量等原因，投入运行后振动严重，裂纹产生，尾水管进入门振裂，发电机层楼板振动。10年来年年修补裂纹、空蚀、多次修复后叶片型线已无法保证，为较彻底的改变这种状况，已对其中一台机进行升级改造，更换了老转轮，代之以一台新设计、采用新工艺的新转轮，困扰电站多年的发电机层楼板振动问题得到基本解决。

But then I got to the free throw line and I wasn't making free throws. That can't happen.

但后来我走到了罚球线上，罚球也不进，这是不应该发生的。

More than ten years ago,"the negative day" the numerical control line cutting engine bed first applies and the actual production, starts the control bench is uses the transistor separative element assembly to become, after but uses the integrated circuit, now to is using the direction which the microcomputer controls to develop, Therefore this definition design "the electrical fire colored thread cutter automatic control" is by 8031 shrapnel machine took the control core, step-by-steps the electrical machinery achievement to actuate the electrical machinery, the diffraction grating a closed-loop control system which constitutes as the position examination part.

十多年前，&负旦型&数控线切割机床首先应用于实际生产，最早控制台是由晶体管分离元件组装而成，逐渐采用集成电路，现在正向采用微型计算机控制的方向发展，因此本论文设计的&电火花线切割机的电气控制系统&是以89C55单片机作为控制核心，步进电机作为驱动电机，光栅作为位移检测元件而构成的一个闭环控制系统。

The numerical analysis shows that the forward-curved impeller can make full use of the capability of fitting the negative incidence range and its internal flow performance is better than that of the baseline, and the forward-curved swept-back impeller can improve effectively the serious separation near the shroud and hub occurred in the baseline.

数值分析表明：前弯叶轮充分利用了其对负冲角工况的适应能力，内流特性优于常规设计的近似径向进口型线叶轮；而进一步发展的前弯后掠叶轮明显改善了原型叶轮轮壳和轮毂处严重分离的现象。

FEATURES: Infinitely variable speed of spindle obtained by inverter, constant surface speed processing, rapid brake of spindle, mixed step motor, smooth running in low speed, hardened and precision-ground bed ways.

特点：主轴采用变频器实现无级变速，恒线速切削功能，主轴快速制动，混合式步进电机，低速运行平稳，床身导轨表面经淬火和精密磨削。

As he spoke there was a plash in the water; I caught the arrowy gleam of a scared fish shooting into the middle of the stream, my hook hung empty from the line.

在他说话的时候，我听到水中响起了&啪&的一声；我看到一道笔直的银光直接射进了水流的中央，鱼钩空空地吊在鱼线上。

SB2015-4 Precise Decimal DC Resistance Box adopts especial aging treatment, precise wire wound resistor of low temperature coefficient and precise airproof switch.

SB2015-4型精密十进位直流电阻箱采用经过特殊老化处理低温度系数的精密线绕电阻器及精密密封开关。

Precise Decimal DC Resistance Box adopts especial aging treatment, precise wire wound resistor of low temperature coefficient and precise airproof switch.

SB2015-1型精密十进位直流电阻箱采用经过特殊老化处理、低温度系数的精密线绕电阻器及精密密封开关。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。