有效性教学

religious instruction───宗教教导

religious instructions───宗教教导

clear instruction───[计]清除指令

macro instruction───广义指令，[计]宏指令

qualified instructor───合格教员

simple instruction───简单指令

driving instructor───驾驶教员

highly instructive───很有启发性

Classroom instruction evaluation should implement the following principles: purpose, learner-orientation, validity, normal reference, objectivity, practicality and variation.───课堂教学评估要贯彻目的性原则、针对性原则、有效性原则、常规性原则、客观性原则、可行性原则、变化性原则等。

The simulation results show the validity of employed finite element method and it can provide theoretical instruction for aluminum extrusion die design and technique parameters selection.───模拟结果表明所用有限体积法是有效的，可以为铝型材挤压的模具设计与工艺参数的选择提供理论指导。

In the validity of the bid regulated in the pre-attached table of the instruction to the bidder, the bidder cannot request to repeal or modify their bidding document.───在投标人须知前附表规定的投标有效期内，投标人不得要求撤销或修改其投标文件。