比高

Open and close a long time and a high degree of large gate valves open and close as to be fully on or off, Cast Steel Gate Valve Series damper travel large, open space use to a certain, high dimensions, large space required for installation.

启闭时间长，高度大由于闸阀启闭时须全开或全关，闸板行程大，开启用要一定的空间，外形尺寸高，安装所需空间较大。(3)结构复杂闸阀一般都有两个密封面，给加工、研磨和维修增加一些，困难零件较多，制造与维修较困难，成本比截止阀高。

After administration,the death rate,body weight,training scores,brain index,MAO-B,SOD,GSH-Px in brain and NO,LDH in serum were determined.Result:The brain index,SOD,GSH-Px activities as well as NO content of drug-treated groups were strikingly higher that of model group,and had not obvious difference from that of normal group except content of LDH was higher.

结果：实验组的脑指数显著( P 。05)高于、SOD，GSH-PX活力和NO含量极显著( P 。01)高于、LDH显著( P 。05)低于、高、中剂量组的MAO-B含量极显著( P 。01)低于、学习成绩和增重极显著( P 。01)好于模型组，与正常组比，实验组除LDH偏高外其他各指标相近。

The most popular during the Shang Dynasty was the "bird and beast" design,hu,(long-necked and small opening, deep-bellied with round base, some with overhanging handle),you (elliptic opening, deep-bellied with round base, has a lid and overhanging handle), lei (some round and some square, openings vary in size, short neck with square shoulders, deep bellied, with curling feet or round base, and has a lid), fou and the like are wine vessels, jue (deep-bellied, tri-pedestal, can be heated on top of fire, protruding grooves at the top for easy pouring), gu (the most common wine-drinking utensil, more often used in combination with jue, which is bigger, opening is shaped like a bugle, long neck, thin waist, tall curling feet), zh(similar to the zun in shape but smaller, some with lids), gong (oval belly, has an outer edge for flow of wine, short handles, bottom has curling feet, lid is in the shape of the head of a beast, some has an entire body like a wild animal, with small spoon as accessory), bei, zhen is to drink from.

尊（鼓腹、敞口、高颈，底有圈足，形制较多，商代以鸟兽形尊最为流行）、壶（长颈、敛口，有的有盖，深腹圆座，有的有提梁）、卣（椭圆口，深腹圆座，有盖和提梁）、罍（有圆形和方形，口大小不一，短颈方肩、深腹，圈足或圆底座，有盖）、缶等是盛酒的器具，爵（深腹、三足，可在火上加温，上端有伸出的沟槽以倒酒）、觚（最常用的饮酒器，多与爵相配使用，比爵小，口呈喇叭状，长颈、细腰、高圈足）、觯，觥（椭圆腹，有流酒的外沿和短提把，底为圈足，有兽头形盖，也有整体为兽形的，并附有小勺）、杯、盏是饮酒的器具。

In the height direction the inverse of object's relative height is linear with the that of image's relative height. In the light-knife direction the ratio of object's length to image's length is linear with the object's relative height.

研究结果表明：高度方向上物体相对高度的倒数和像相对高度的倒数成线性关系；光刀方向上物像的长度比和物体的相对高度成线性关系；新的定标方法精度高，操作方便；光刀测量三维物体切口长度精度高、成本低、处理速度快。

During air drilling,under the precondition of high drilling speed, pneumatic hammer drilling technology can validly control the well deflection.

空气锤钻井是一种低钻压、低转速、高冲击破岩回转钻进技术，它兼容了气体钻井和冲击回转钻井的优势，其机械钻速一般比回转钻井高，是当今解决硬岩钻井难题的一种有效方法。

In the paper, we investigate, respectively, the unsteady transport properties of heat and moisture in enclosure under constant wall heat flux and constant wall temperature when porous particles are small and Darcy number is lower, the effect of conductivity ratio, heating conditions and other parameters on the heat transfer rate of enclosure when particles are larger and Darcy number are higher.

并分别对多孔颗粒较小时的低Da数封闭腔内的非饱和渗流与传热，及颗粒较大的高Da数封闭腔内的非饱和自然对流行为进行了数值模拟，研究了低Da数时湿分与热量在恒热流与恒壁温条件下的非稳态传递特性，高Da数时封闭腔的传热与流动特性、达西效应以及导热比、加热条件等对空腔传热系数的影响。

Feedback ammeters with high value sensing resistors in the feedback loop have lower Johnson current noise and thus greater sensitivity than shunt ammeters with lower resistance shunts.

反馈安培计反馈回路中的取样电阻阻值高，其约翰逊电流噪声就比较低，从而比分流电阻值低的安培计的灵敏度更高。

If the application you are working on calls for amperages higher than what the gun or torch is rated, it is recommended to purchase a higher amperage gun or torch that can operate at a higher duty cycle.

如果你正在应用呼唤amperages高于或火炬被评为枪、因此建议购买枪支或更高电流火炬能在更高的占空比操作。

Model PMG series high efficient ball mill have been designed with the merits of open circuit grinding system and important renovations on traditional ball mills. Besides they have all the good advantages of open circuit mills, production capacity has been raised substantially, product becomes super fine and blains have been increased. It has provided a new type of grinding equipment for producing high strength grade cement with high output and super finess.

PMG 型系列高效球磨机是在开流粉磨系统所具有的优缺点中扬长避短而设计的高效球磨机，对传统的球磨机做了重大的改进，除具有开流粉磨系统一切优点之外，与同规格的球磨机相比， PMG 型系列高效球磨机产量有了大幅度的提高，且粉细、比表面积增大，实现高产、高细，为生产高标号水泥提供了一种新型的粉磨设备。

When Matthew Kahn and Iestimated household carbon emissions across American metropolitan areas we found that the three areas with the lowest emissions were San Diego San Francisco and San Jose. Carbon emissions in these places are still more than four times the emissions in the brownest Chinese city and10 times as high as the household emissions in the average Chinese city. Thatgulf reminds us why America has so little moral authority on global warming and why the world's carbon emissions will probablysoar as China and India acquire the living patterns of prosperous nations.

Matthew Kahn和我估算着美国大都市的居民碳排放，我们发现圣地亚哥、旧金山和圣何塞是碳排放最低的3个地区，但是这些地方的碳排放仍然高出中国污染最严重的城市4倍多，而且比中国一般城市的居民排放率高出10倍，这种差距提醒我们为什么美国在全球变暖事务上没有足够的权威性，以及为什么全球的碳排放将继续增长，随着中国和印度正在向富裕国家的生活模式靠近

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。