在生产中的

The hydrolysis is an important step in the production of titanium dioxide through sulphate process.

在硫酸法钛白粉的生产中，水解技术是其中关键的一环。

In welding production,how to optimize these parameters settings is a problem to be solved imperatively.

在焊接生产中，如何优化这些参数的匹配是一个亟待解决的问题。

In a hot strip mill, control of the laminar cooling process is essential to product quality and safe operation of the mill.

在实际生产中，层流冷却过程控制对于提高产品质量和热轧冷却设备的安全可靠运行都具有重要的意义。

The quality of PVB film in laminated glass directly affects the final product's quality and service life.

在夹层玻璃生产中PVB 胶片的质量直接影响制成品的质量和使用寿命。

The present invention adopts the technical proposal of adopting ZSM-5 mesoporous molecular sieve raw powder with a silicon-aluminum mol ratio SiO2Al2O3 of 20 to 1000 and a weight percentage of 20 to 100 percent as well as at least one caking agent selected from SiO2, clay and Al2O3 to extrude, tablet or spray into shape; then treating for 1 to 8 hours by 0.1 to 3 mol/l of at least one ammonium liquor from ammonium nitrate, ammonium chloride or ammonium sulphate or 0.1 to 8.5 mol/l of at least one acid liquor from muriatic acid, nitric acid, vitriol or acetic acid under a temperature of 20 to 90 DEG C; then using steam to treat for 2 to 15 hours under the temperature condition of 400 to 700 DEG C; using a liquor of 0.1 to 3mol/l selected from at least one of oxalic acid, citric acid or maleic acid under a temperature condition of 20 to 90 DEG C to dip for 2 to 5 hours to obtain the modified molecular sieve catalyst, thus better solving the problems.

本发明通过采用硅铝比SiO2/Al2O3为20～1000重量百分比计20～100％的ZSM-5介孔分子筛原粉与余量的选自SiO2、粘土或Al2O3中至少一种粘结剂挤条、压片或喷球成型；再经过0.1～3摩尔/升选自硝酸铵、氯化铵或硫酸铵中的至少一种铵溶液或0.1～8.5摩尔/升选自盐酸、硝酸、硫酸或乙酸中的至少一种酸溶液在温度20～90℃下处理1～8小时；然后在温度为400～700℃条件下水蒸汽处理2～15小时；再用0.1～3摩尔/升选自草酸、柠檬酸或马来酸中至少一种在温度为20～90℃条件下浸渍2～5小时得所需改性分子筛催化剂的技术方案较好地解决了该问题，可用于甲醇转化制丙烯的工业生产中。

Many inorganic nonmetallic materials with lead are widely produced in the past.

在目前的材料生产中，大量的无机非金属材料都含有铅。

The macroprogram is written by using the elliptical parametric equation, then some actual work problem can be solved with the macroprogram.

在数控编程的实际应用中，常见的是直线插补和圆弧插补，没有椭圆插补，但在实际生产中，往往遇到许多椭圆的零件需要加工，如果手工常规编程就无法编制出椭圆的加工程序，为了解决这个问题，在数控编程中有宏程序可以做到椭圆的加工，本文按HCNC-21T系统（在其他系统只不过是宏程序的格式不同而已）对椭圆做内、外的加工编程举例，还在内椭圆的加工中先加工一个工艺孔，巧妙利用椭圆的参数方程来编写宏程序，用宏程序来解决一些实际的工作问题。

In long-term moving about in search of pasture ,they have formed the traditional production life style.

在长期的游牧生产中，形成了传统的生产生活方式。

There are a lot of factors affecting the silicon content in pig iron in the blast furnace production, and increasing the MgO content in the slag is one of the effective methods.

在高炉生产中，影响生铁含硅量的因素很多，其中，提高炉渣中MgO含量是一个很有效的措施之一。

In the development and production of helicopter, rotor wing system is in a vital position.

在直升机研制生产中，旋翼系统的发展处于特别重要的地位。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。