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The process includes the following steps: dissolving bromine in halogenated hydrocarbon, dropping the bromine solution into reactant system comprising pentabromo toluene, halogenated hydrocarbon, free radical initiator and hydrogen peroxide at 50-65 deg.c, and heating to 60-78 deg.c for reflux reaction until the reactant system becomes transparent; filtering the resultant to obtain solid product, washing with carbon tetrachloride and water separately and vacuum drying to obtain pentabromo benzyl bromide.

具体步骤为：将五溴甲苯、卤代烃、自由基引发剂和过氧化氢组成的反应体系加入到三颈瓶中，将0.07～0.1mol的溴溶于50ml卤代烃配成溶液，在50-65℃温度下滴加到反应体系中，滴加时间为50-70分钟，然后升温至60-78℃温度下回流反应，至反应体系逐渐变透明，且不再产生气泡时，将所得产物过滤，得到固体产物，分别用CCl 4 和水洗涤，真空干燥，即得到五溴苄基溴；其中，五溴甲苯与溴的摩尔比为1∶0.7-1∶1.0，溴与过氧化氢的摩尔比为1∶1.0-1∶1.4，自由基引发剂加入量为五溴甲苯重量的1-10％，卤代烃的加入量为反应体系体积的40％-100％，所用溶剂可以直接进行下一批反应，不需要更换溶剂或蒸馏提纯。

The PCVD plasma impregnation process of hot forging die includes surface deoiling, polishing, supersonic cleaning in acetone and alcohol dewatering of the die after quenching at 1070 deg.c and tempering at 530 deg.c; plasma nitriding in a industrial PCVD vacuum furnace; and PCVD plating.

本发明公开了一种精密叶片热锻模具的PCVD等离子体渗镀复合强化方法，将经1070℃淬火，530℃回火后的叶片模具(HRC＝43-50)经表面除油、抛光后浸入丙酮中超声波清洗，酒精脱水；然后放入工业型PCVD真空炉内进行等离子体渗氮和PCVD镀膜处理。

The side of the air inlet (14) closest to the outer edge of the wings (13) on the fan wheel (12) is arranged at an angle of 10 DEG to 60 DEG in relation to the outer edge of the wings (13) on the fan wheel (12) to reduce the amount of sound generated.

最靠近风扇轮(12)的翼片(13)的外边缘的空气入口(14)的侧面(17)设置为相对于风扇轮(12)的翼片(13)的外边缘成10°至60°的角度，以减少产生的声音量。

Through the processes of grinding bastnaesite ore concentrate, mixing the ore powder with NaCO3 in the ratio of 1 to 0.1-0.4, roasting the mixture at 400-800 deg.c for 1-6 hr, elution of the roasted sand with hot water to obtain NaF, drying filtered drag after eluting NaF and mixing the dried drag with ammonium chloride, roasting the mixture at 300-600 deg.c for 1-3 hr, hot water soaking to obtain rare earth chloride solution, extraction with 20% kerosine solution of naphthenic acid, and hydrochloric acid counter extraction to obtain rare earth chloride product.

本发明涉及一种氯化铵法从氟碳铈精矿提取氯化稀土的方法，首先将氟碳铈原精矿磨细，并与NaCO 3 混合，其比例为原矿∶NaCO 3 ＝1∶0.1～0.4，混合均匀后在400℃～800℃焙烧1～6小时，焙砂用热水洗出NaF，洗出NaF的滤渣干燥后与氯化铵混合，于300℃～600℃焙烧1～3小时，再用热水浸取得到氯化稀土溶液，用20％的环烷酸煤油液萃取，再采用盐酸反萃得到氯化稀土产品。

In the preparation method, primary soybean oil and deep hydrogenation soybean oil, or primary rapeseed oil and deep hydrogenation rapeseed oil are adopted as raw materials; sodium methoxide is selected as a catalyst; the consumption of the catalyst is 0.1 percent to 0.5 percent; the reaction temperature is 70 DEG C to 110 DEG C; therefore, the primary soybean oil and the deep hydrogenation soybean oil, or the primary rapeseed oil and the deep hydrogenation rapeseed oil have randomized lactide reaction for 10 min to 90 min, so as to change the composition of mixed oil triglyceride and obtain the low/zero trans fatty acid base oil with different melting points and the characteristics of solid fat.

本发明以一级大豆油和极度氢化大豆油，或一级菜籽油和极度氢化菜籽油为原料，选择甲醇钠为催化剂，催化剂用量0.1％～0.5％，反应温度70～110℃，使一级大豆油和极度氢化大豆油，或一级菜籽油和极度氢化菜籽油之间进行随机交酯化反应，反应时间10～90min，从而改变混合油甘三酯组成，得到具有不同熔点和固体脂肪特征的低/零反式脂肪酸基料油。

The ethylene producing process includes: distilling 5-45 % concentration ethanol solution to obtain mixed ethanol-water vapor, heating the mixed ethanol-water vapor to 150-350 deg.c, catalytic reaction in a gas-solid reactor to obtain coarse ethanol product, cooling, gas-liquid separating to eliminate components with boiling point higher than 70 deg.c and obtain ethylene gas, and washing, drying and refining to obtain ethylene product.

其特征是将乙醇蒸馏和化学催化制乙烯工艺过程耦合，浓度为5～45％乙醇经蒸馏系统得到乙醇-水混合蒸气，该乙醇-水混合蒸气继续加热到150～350℃后进入气-固催化反应器中经催化剂作用得到产物为粗乙烯，粗乙烯冷却后，使用气液分离装置去除其中沸点大于70℃组分得到乙烯气体，乙烯气体依次通过洗涤、干燥和精制得到乙烯产品。

The present invention relates to modifying activator used in flue-curing tobacco and spraying method for said activator. The activator consists of solid matter and water, and the solid matter includes potassium salt, cane sugar an boric acid. The activator is sprayed with a sprayer onto tobacco to be initially flue-cured, and the initial flue-curing stage is one at the dry bulb temperature of 50-56 deg.c, wet bulb temperature of 38-41 deg.c and time of over 24 hr to increase the content of fragrant matter in tobacco.

本发明涉及了一种烘烤烤烟烟叶中使用的调质活化剂和该活化剂的喷洒方法，该活化剂由固体物质和水组成，所述的固体物质含有钾盐、蔗糖和硼酸，用喷雾器将上述活化剂以雾化的方式均匀地喷洒至即将进入初烤阶段的烟叶上，烟叶是已编上竿、准备进入烤房的烟叶，初烤阶段的干球温度在50-56℃，湿球温度为38-41℃，烘烤的时间延长至24小时以上，以增加烟叶的香气物质的含量。

To investigate the the body shape strength and kinematics thateffects sprint expert performance 17 healthy male sprinters weremeasured using SongxiaM9000 high speed vidicon in the field; body shape of sprint athlete were tested by steel rule; Meanwhile shoulder were tested at 60, 240and360 deg/sec velocities ; lower limb were tested at 60, 240 deg/sec velocitues using Biodex-II tesing and rehabilitation system in the laboratory This research provide theoretical basement to scientifically make reasonable exercise prescription and perfect sprint theoryThe result show that (1) The results of correlation indicate that 100M performance related to the shoulder fast flexion torque and hip flexion/extension torque^ ankle fast dorsiflexion torque ;(2) The upper arm relaxing enclose and lower limbs length effect 100Mperformance;(3) The biggest shoulder extension joint, swing rage of shoulder and the biggest elbow joint extension effect 100M performance.

使用松下M9000高速摄像机对100米跑动过程中的运动员进行录像，同时测试短跑运动员100米成绩，利用爱捷录像分析系统获取运动学参数；用人体测量尺测试短跑运动员的肢体围度；同时采用Biodex-Ⅱ型等动测力及康复统，测试运动员上肢肩关节及下肢髋、膝、踝3个关节的等速屈伸肌力。在角速度60°／s、240°／s和360°s下测试肩关节等动向心收缩肌力；在角速度60°／s9慢速和240°／s及120°／s下测试下肢3关节等速向心及离心肌收缩肌力。分析肢体围度、各关节肌肉力量和运动学参数与100 影响河北省二级以上短跑运动员专项成绩的因素。一身体形态、力量素质和运动学参数米成绩的内在联系，为合理制订短跑力量训练和完善短跑理论提供理论依据。结果表明；肩带肌群肌力矩确实与100米成绩呈显著高度相关，同时髓关节屈伸力矩比、踝关节背屈力矩与100米跑成绩呈显著中度相关，可能《是影响100米的因素之一。（2）上臂紧张围、上臂放松围与100米跑成绩呈显。著中度相关；最大肩关节伸角、肩关节摆动幅度和最大肘关节伸角与 100 米成绩呈显著中高度相关。

The autoclave is for 4-10 hours at a constant temperature of 175-210 DEG C and under the vapor pressure of 1.0-1.3 Mpa; steam curing is to steam cure 24-48 hours at a constant temperature of 70-100 DEG C.

蒸压是在175～210℃恒温蒸压4～10小时，蒸汽压为1.0～1.3Mpa；蒸养是在70～100℃恒温下蒸养24～48小时。

Under distillation conditions, including a bottoms temperature of greater than about 55 DEG C and less than about 75 DEG C, an overhead or side-cut distillate stream containing a purified propylene oxide is obtained with low yield loss of propylene oxide to propylene glycols and other glycol heavies.

在包括大于大约55℃且小于大约75℃底部温度的蒸馏条件下，得到含有纯环氧丙烷的塔顶馏分流或侧馏分流且具有低的从环氧丙烷转化到丙二醇和其他二醇重质的产率损失。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。