k21

Analysis for the Influence Factors on the Quality of the Web K21 Air - Laid Web-Forming Machine

Air（初三适用）影响K21气流成网机成网质量的因素分析

Research on High - temper at ure Tensile Strength of Modified K21 Superalloy

改型K21合金高温拉伸强度研究

Research on Characteristic of Conglomerate Layer K21 in Yungang Ditch

大同矿区云冈沟K21砾岩层特征研究

Treatment of the Mud Break Out from Wall Rock at K21 + 780 in Tong Yu Tunnel

通渝隧道K21+780涌水突泥段的治理

The article introduces the distributing area , thickness change , the old river erosion and sediment surroundings of conglomerate layer K21 .

就大同矿区K21砾岩层的分布范围、厚度变化、古河流冲刷现象、砾径变化、沉积相等进行了介绍。

Therefore , modified K21 superalloy , which has a good strength below 900 ℃, can be used as a die materials of isothermal forging in this range of temperature .

因此，在低于900℃时，改型K21合金具有较好的强度，可作为900℃以下温度范围内的等温锻造用模具材料。

The procaine pharmacokinetic Parameters ( Vc , K10 , K21 ,β) of dogs , desired plasma concentration , body weight and infusion time were inputted .

向程序输液泵输入犬普鲁卡因药代动力学参数（Vc，K10，K21，β），预期血药浓度，体重及输注时间。

The microstructure evolution and tensile strength of modified K21 superalloy obtained by vacuum melting casting were investigated after tensile test at room temperature , 800 ℃, 900 ℃ and 950 ℃ .

对经真空熔炼浇注的改型K21合金分别在室温、800℃、900℃和950℃下进行拉伸试验。

This article analyses the operational theory based on the composition of K21 air-laid web-forming machine . It proposes the main processing data influencing the web evenness and the principals for choice .

根据K21气流成网机结构，分析其工作原理，通过试验探讨了主要工艺参数对纤网均匀性的影响及其选择原则。