查询词典 twin

Embryo development and origin of twin-embryo of autotetraploid rice with twin-embryo seedlings were observed and verified.

利用激光扫描共聚焦显微技术对同源四倍体双胚苗水稻的受精过程、胚胎发育过程和双胚来源进行观察鉴定。

Twin-rotor continuous mixers are a kind of advanced continuous mixers that characterize both Banbury mixers and twin-screw extruders.

双转子连续混炼机是一种性能优良的连续混炼设备，兼具有密炼机和双螺杆挤出机的优点，是一种具有当代国际先进水平的连续混炼机。

If the power series ∑anxn an ∑anxn and ∑bnxn satisfy the condition r =∑bn xn, we obtain the twin combinatorial identity theorem between the sequences {an} and bn}.We also obtain some specific twin combinatorial identities by using the expansion on the binomial expression formula, including two expansions of combinatorial number(rsn and ...

如果幂级数∑anxn与∑bnxn满足条件r＝∑bnxn 时，获得数列｛an｝与｛bn｝之间孪生组合恒等式的定理，应用在二项式定理等展开式上得出具体的多组孪生组合恒等式，其中包含组合数的两种展开法，Bernoulli数直接表达式的新证等结果。

On the basis of twin-roll thin strip continuous casting experiments and solidification structure characteristic analysis of thin strip and combining with the simulation results of effects of technological parameters, the forming mechanism of solidification structure zone (especially equiaxed crystal zone) on 1Crl8Ni9Ti stainless steel twin-roll thin strip was investigated.

在双辊薄带连铸实验和薄带凝固组织特征分析的基础上，结合对薄带凝固组织区的模拟预测结果，研究了1Cr18Ni9Ti不锈钢双辊薄带凝固组织区的形成机理。结果表明：1Cr18Ni9Ti不锈钢双辊薄带凝固组织中的等轴晶区不但在凝固类型为半固态时形成，在轧制或理想型时也能形成。其形成机理为，熔池中悬浮游离晶体的沉积、聚集以及在枝晶生长前沿的长大和薄带离开二铸辊最小间隙后，薄带/空气界面换热系数骤然降低抑制了柱状枝品的生长，并促使薄带中部未凝固熔体中游离晶体的择优长大

Results indicate that when the strain rate is 1200 s-1, the twin number of samples in different orientation increases with plastic strain increasing; when the strain rate increases to 2800 s-1, the σ-ε curves have no obvious charges as the angle is 0o and 45o, compared with that at 1200 s-1; however the σ-ε curves vary from concave to convex when the angle is 90o, because thermal softening has occurred with increasing plastic strain, which results in the number of twin decreasing, and smaller strain hardening

结果表明：当加载应变率为1200 s-1时，不同取样方向的样品中孪晶数量均随塑性变形应变量的增大而增多；当加载应变率增大到为2800 s-1时，取样方向为0°和45°、流变曲线形状较应变率为1200 s-1时没有明显变化，而取样方向为90°时曲线形状由应变率为1200 s-1时的凹形变为凸形，曲线形状变化的原因是由于应变量增大，热软化效应使得孪

For HDPE,you can choose high efficient single screw extruder, for PVC,you can choose conical twin screw extruder or parallel twin Downstream equipment:The forming system of this line consists of mould and corrugator.

挤出机：挤出机可根据用户原料情况特殊设计，HDPE采用新型高效单螺杆挤出机，PVC采用大型平双或锥双挤出机。

V-shape grooves exist in twinned crystal planes of fivefold twin. As for thermodynamics and kinetics, the grooves are helpful for diamond grains of fivefold twin to grow.

正二十面体和正十面体颗粒都是"五重孪晶"结构，在颗粒表面上与五重孪晶面对应的区域形成V-形槽，这种V-形槽对五重孪晶金刚石颗粒的长大有热力学和动力学的有利作用。

The FSR includes a driven unwind, closed loop taper tension control, slow down festoon with a splice table and web clamps and a twin rewind module with twin lay-on rollers and dancer tension control.

在FSR包括驱动放松，闭环锥度张力控制，减缓绳与剪接表和网络钳和一个双倒带模块，双下岗的辊和张力控制舞蹈演员。

The Omega FSR includes driven unwind, closed loop taper tension control, slow down festoon with splice table and web clamps, twin rewind module with twin lay-on rollers and dancer tension control.

欧米茄FSR包括驱动放松，闭环锥度张力控制，减缓绳与剪接表和网络联接，双倒带模块，双下岗的辊和张力控制舞蹈演员。

The interclass co-twin correlations of blood glucose, and HOMA-IR of those twin pairs sharing 2 alleles of IBS were greater than those sharing 0-1 alleles of IBS. BMI, blood glucose and birth weight of those carrying the mutant C allele were higher, but the differences had no statistical significance.

状态一致(identity by state， IBS)为2时双生子同胞间血糖和HOMA-IR组内相关系数大于IBS为1时；携带C突变等位基因者BMI、血糖和出生体重较高，但差异无统计学意义。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。