restriction point

Conclusion : The expression of cyclinE and activity of cyclinE / Cdk2 kinase are increased obviously in G0 / G1 stage cells infected with HCMV , which may induce the cell cycle to overpass G1 / S restriction point and make the cell cycle arrested in later G1 stage .

结论HCMV感染同步化于G0/G1期的细胞后，诱导CyclinE蛋白明显升高，激活CyclinE/Cdk2激酶，使细胞周期越过G1/S限制点，将细胞周期阻止于晚G1期。

Technical improvements in somatic cell hybridization , such as genetic transformation , provide a promising approach for breeding new tolerant cultivars of this species , good protoplast culture system is fundamental and restriction point .

植物体细胞杂交技术的产生和发展为草地早熟禾新品种选育提供了一条新途径，良好的原生质体培养体系是利用体细胞杂交技术进行品种改良的根本和制约点。

The restriction among point , line and plane in3D-space are used to get the trajectory pose accuracy measurement model , which is based on line matching technology .

根据空间解析几何学中点、线和面三者之间的约束关系，建立了基于直线特征匹配的工业机器人运动轨迹位姿视觉检测模型。

Method of Display for Temporary Speed Restriction Message Using Feature Point

基于特征点的临时限速信息显示方法

Plus its structural restriction , the dynamic point contact between the stator and the rotor leads to many disadvantages such as rough running , serious abrasion , low driving torque , etc.

由于结构限制，其定转子的动态点接触导致电动机运转不平稳、磨损大和驱动力矩小等不足。