查询词典 sieve method

The molecular sieve is prepared in the steps: at the room temperature, hexadecyl trimethyl ammonium bromide is mixed and dissolved with the sodium hydroxide, and is added with TEOS in dropping way, and simultaneously added with Me metal salt water solution and lanthanum nitrate solution in dropping way; the pH value of the mixed solution is adjusted by acetic acid to be 10 to 11, and is mixed for 1 to 2 hours after being stabilized; the sol is moved into a polyfluortetraethylene bottle to be heated and crystallized for 2 days in the oven at the temperature of 100 DEG C; after filtering, washing and drying for nights, and being calcined in a muffle at the temperature of 550 DEG C for 3 to 7 hours, the dual-metal-atom improved MCM-41 mesoporous molecular sieve is obtained.

该分子筛的制备为室温下，将十六烷基三甲基溴化铵和氢氧化钠混合溶解，搅拌并滴加入TEOS，同时滴加入Me金属盐水溶液和硝酸镧溶液并搅拌，用乙酸调节pH值至10～11，稳定后搅拌1～2小时，溶胶转入聚四氟乙烯瓶中在100℃下烘箱水热晶化2天，经过滤、洗涤、干燥过夜，马弗炉550℃焙烧3-7h，得双金属原子改性MCM-41介孔分子筛产品。

The difference of blood capillary caliber in nipple prompts ischemic lesions occur easily in sieve plate prezone and sieve plate district.

视乳头各层毛细血管口径不同，提示筛板前区及筛板区容易发生缺血性病变。

It is a new technique to synthesize SAPO 34 molecular sieve using cheap triethylamine (Et 3N) as the template, and the selectivity of this molecular sieve for ethene and propene can be improved further.

采用X射线衍射、扫描电镜、氨吸附红外光谱及核磁共振等表征手段，研究了以氟化氢三乙胺为复合模板剂合成的SAPO 34分子筛。

However,for the catalytic pyrolysis of sterically hindered PP,the effect of mesoporous molecular sieve sructure on pyrolysis results of PP is more important than that of mesoporous molecular sieve acidity.

而对于具有较大空间位阻的PP的催化裂解反应，催化剂酸性在一定范围内对PP的裂解结果影响不明显，表明催化剂孔结构的作用更重要，较大的孔径有利于PP的催化裂解。

Perforated like a sieve .I don't remember her name. I have a head like a sieve .

我忘记了她的名字，我的脑壳像筛子，记性太坏。

For the coked 5A molecular sieve, using air as regeneration gas at a space velocity of 720h-1, a regeneration temperature of 350℃ and a regeneration time of 1h, the activity of the regenerated molecular sieve could reach 96% of that of the fresh one.

对于结焦5A分子筛，以空气为再生气体，在空速为720h-1、350℃条件下再生1h的吸附活性可以达到新鲜5A分子筛的96%左右。

In order to prolong the running cycle of producing high purity n-hexane from reformate raffinate through adsorption-distillation technology, coking of olefins in the channels of 5A molecular sieve and regeneration of coked 5A molecular sieve were studied by microstructure analysis.

为实现吸附-精馏耦合由重整抽余油生产高纯度正己烷工艺的长周期运行，采用微结构分析方法研究了烯烃在5A分子筛孔道中的结焦行为及失活分子筛的再生工艺。

And the country among major cities has sales outlets, the main products include all types of standard screen, coal Sieve, sieve coking and analysis equipment, laboratory equipment, building materials, road equipment and accessories.

浙江省上虞市水仙仪器有限公司是一家专业从事机械科研试验仪器生产的企业，下设兰州水仙仪器有限公司，并在全国各大中城市设有销售网点，主要产品有各类标准筛、煤样筛、焦化筛和分析仪器、化验设备、建材、公路仪器及配件。

ZSM the low pulse pair of drum sieve used in the net outflow double drum screen structure, configuration of high-precision adjustable gap inside and outside the rotor, rotor reasonable shape and form of arrangement with the advanced matched corrugated drum sieve can be fully raise The ability to sift through the pressure, a significant reduction in power consumption and a plasma pulse.

ZSM双鼓式低脉冲网前筛采用内、外流双筛鼓结构，配置可调间隙的高精度内、外旋翼，合理的旋翼形状及其布置形式与先进的波纹筛鼓相配合，可充分提高压力筛的通过能力，显著降低动力消耗及出浆脉动。

Local spiral from the main shaft, base, gear, pulp into the mouth, drum sieve, sieve, reducer, coupling, electrical components and so on.

本机主要由螺旋轴、机座、齿轮、进浆口、筛鼓、筛板、减速器、联轴器、电动机等组成。

After explaining total design of automated test system for microcircuit , the thesis introduces GPIB standard .

文章在说明了微电路模块自动测试系统的总体设计后，对GPIB标准进行了介绍。

He interceded in my behalf.

他替我说情。