中线的

According to the analysis of situation on overdrawing groundwater in Hebei province, the project of midline for supplying water to the north from south is the guarantee of water resources of restoring the groundwater descend funnel .

通过对河北省地下水超采状况分析，指出南水北调中线工程的尽快实施是降落漏斗修复的水源保障。

Methods: Twenty five patients with congenital missing of one or two incisors, 17 patients were treated with extraction, 5 patients were treated orthodontically and prostbodontically. 3 patients were treated with slenderizing to solve crowding and adjust median line and Bolton index.

25例先天缺失下颌个别前牙1～2颗的患者，其中17例采用减数方法进行矫治，5例集中间隙，结合修复进行治疗，3例结合邻面去釉、改变牙轴等手段解除拥挤，采用调整中线和Bolton指数的方法进行矫治。

China does not recognise the boundary, and is already extracting gas from a field which straddles it.

但中国政府并不认同这样的划分，并且已经开始在其中一个位于中线之上的区域开采天然气。

Based on analyzing and summing up the cause and type of stria produced in the pittsburgh process, the author presents a method to avoid production of stria by improving structure of bridge wall and strengthening operation.

作者分析归纳了无槽垂直引上作业中线道产生的原因和种类，提出改进桥砖结构和加强操作防止线道产生的方法。

Urban systems generally use a large number of low-pressure valves, and to the development of environment-friendly and energy-sing, that is used in the past low-voltage iron gate valve and gradually turn to environment-friendly plastic sheet valve, balance valve, metal sealed butterfly valve and the transition of the center line butterfly valve seal .

城建系统一般采用大量低压阀门，并且向环保型和节能型发展，即由过去使用的低压铁制闸阀逐步转向环保型的胶板阀、平衡阀、金属密封蝶阀及中线密封蝶阀过渡。

Sheng Cheng Qing County valve manufacturing company, located in the beautiful 30 km northeast of Cangzhou Lion City, covers an area of 6,000 square meters, the company mainly produces various types of center line butterfly valve, different carbon steel (416,304, 316) of various parts: shaft, valve shaft, valve plate, flange and so on.

青县晟程阀门制造公司，位于美丽的狮城沧州东北方向30公里，占地面积有6000平方米，本公司主要生产各种型号中线蝶阀阀门，不同碳钢材质（416、304、316）的各种配件：转轴、阀轴、阀板、法兰等。

Another task that needs to be done before the deck beams are glued (I use 30 minute Epoxy for glue) in is to cut a notch at the center point of the beam where the centerline deck beam will be placed.

另一项任务，需要做前甲板上梁的胶合板（我用30分钟的环氧树脂为胶），是在切开一个缺口在中心点梁如中线甲板束将放在。

Petrochemical industry major applications API standard gate valve, globe valve and check valves; electricity sector, mainly in power stations using high-temperature pressure valve, globe valve, check valve and safety valve, and part of the low-pressure water supply and drainage valve butterfly valve, gate valve; the chemical industry mainly uses stainless steel valve, globe valve, check valve; metallurgical industry mainly uses low-voltage large-diameter butterfly valve, oxygen valve and oxygen valves; urban construction department used mainly low-pressure valve, such as urban water mainly uses large-diameter brake pipe valve, the main floor, blending the building with the center line butterfly valve, urban heating primarily metal sealing butterfly valve; oil pipeline used mainly flat valve and ball valve; the pharmaceutical industry mainly uses stainless steel ball valve; the food industry mainly uses stainless steel ball valve and so on.

石化行业主要应用API标准的闸阀、截止阀和止回阀；电力部门主要采用电站用高温压闸阀、截止阀、止回阀和安全阀及一部分给排水阀的低压蝶阀、闸阀；化工行业主要采用不锈钢闸阀、截止阀、止回阀；冶金行业主要采用低压大口径蝶阀、氧气截止阀和氧气球阀；城市建设部门主要采用低压阀，如城市自来水管道主要采用大口径闸阀，楼寓建设主要采用中线蝶阀，城市供热主要采用金属密封蝶阀；输油管线主要采用平板闸阀和球阀；制药行业主要采用不锈钢球阀；食品行业主要采用不锈钢球阀等。

Petrochemical industry Rising stem resilient gate valve majopplications API standard gate valve, globe valve and check valves; electricity sector, mainly in power stations using high-temperature pressure valve, globe valve, check valve and safety valve, and part of the low-pressure water supply and drainage valve butterfly valve, gate valve; chemical industry is mainly made of stainless steel valve, globe valve, check valve; metallurgical industry Forged steel welding gate valve mainly uses low-voltage large-diameter butterfly valve, oxygen valve and oxygen valves; urban construction department used mainly low-pressure valve, Such as urban water supply pipeline used mainly large-diameter valve, floor, blending the building of the center line butterfly valve used mainly in urban heating primarily metal sealing butterfly valve; oil pipeline used mainly flat gate valve and ball valve; the pharmaceutical industry mainly uses stainless steel ball valve; the food industry mainly uses stainless steel ball valve and so on.

石化行业主要应用API标准的闸阀、截止阀和止回阀；电力部门主要采用电站用高温压闸阀、截止阀、止回阀和安全阀及一部分给排水阀的低压蝶阀、闸阀；化工行业主要采用不锈钢闸阀、截止阀、止回阀；冶金行业主要采用低压大口径蝶阀、氧气截止阀和氧气球阀；城市建设部门主要采用低压阀，如城市自来水管道主要采用大口径闸阀，楼寓建设主要采用中线蝶阀，城市供热主要采用金属密封蝶阀；输油管线主要采用平板闸阀和球阀；制药行业主要采用不锈钢球阀；食品行业主要采用不锈钢球阀等。

It has been used for box culverts structure design of Beijing project of South-North Water Transfer and other box culverts projects.

该系统荣获北京市水利规划设计研究院优秀软件一等奖，并且已经用于南水北调中线工程北京段的箱涵结构设计和北京五环路地下通道的结构设计中。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。