研究了环形、车轮形及蜂窝形等异形催化剂颗粒的有效因子、固定床传热性能及其压降。
The technology of making abnormal shape catalyst particles is recently developed mainly for the enhancement of their effectiveness factors with low pressure drops in fixed bed reactors.
我们分析到底是骨折复位还是内固定位置可以作为内固定并发症的预测因子。
We analysed whether fracture reduction and implant position could possibly be indicators for implant complications.
固定步长因子无法解决收敛速度和稳态误差之间的矛盾。
Fixed step size can not result in fast convergence speed and low residual error simultaneously.
为了改善固定遗忘因子递推最小二乘(rls)算法在时变系统中的跟踪性能，提出一种改进的RLS算法。
In order to improve the tracking performance of the fixed forgetting factor RLS algorithm in the time-varying system, a modified RLS algorithm is proposed.
近年来，甲烷蒸汽转化催化剂异形化研究取得了很大进展，其主要目的是提高催化剂的效率因子，降低固定床反应器中的压降。
In recent years, the irregular shape methane steam reforming catalyst development progresses rapidly with the goal to increase catalyst effectiveness and reduce the pressure drop in fixed bed reactor.
与传统的金属线宽和间距固定不变的无源片上螺旋电感相比，线宽和间距由外圈到内圈渐变的新型结构电感能有效提高电感品质因子。
Compared with conventional passive inductors with fixed metal width and space, an inductor with gradually changed mental width and space is put forward to improve its quality factor.
变换具有多种分辩率，克服了短时窗傅立叶变换固定分辩率的不足：另外，S -变换中含有相位因子，这是小波变换所不具备的特性。
S-transform has muti-resolution overcoming single resolution of short-time Fourier transform. Otherwise, S-transform contains phase factor which wavelet transform has not.
结果表明：当锥角固定时，冲量和冲量耦合系数随无量纲因子先增大后减小，极大值对应的无量纲因子仅与气体比热比相关；
The results show that, impulse and impulse coupling coefficient firstly increase and then decrease with the augment of the dimensionless factor when cone angle is fixed;
目的：判定青少年特发性脊柱侧凸患者使用不锈钢后方入路脊柱内固定器械后血清铬水平的预测因子。
Methods: Thirty patients with adolescent idiopathic scoliosis undergoing posterior instrumented spinal arthrodesis using stainless steel implants between 1998 and 2002 were prospectively studied.
目的：判定青少年特发性脊柱侧凸患者使用不锈钢后方入路脊柱内固定器械后血清铬水平的预测因子。
Methods: Thirty patients with adolescent idiopathic scoliosis undergoing posterior instrumented spinal arthrodesis using stainless steel implants between 1998 and 2002 were prospectively studied.
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