But how precisely these inputs are converted into a test score is a mystery, and without knowing which lever to pull, it is difficult to design an effective incentive scheme.
但是这些投入究竟是如何精确地转化为测试成绩却是一个谜。如果不知道需要去撬起哪个杠杆，那么是很难设计出一个有效的激励计划的。
A stable, reliable push-pull pulsed wire feeder and its working Principle are introduced. Effective factors of wire-feed stability is also analyzed in this paper.
本文介绍了一种送丝性能稳定、可靠的推拉脉动送丝机及其工作原理，分析了送丝稳定性的影响因素。
Range-velocity simultaneous pull-off is one of effective measures for countering PD radars.
距离-速度同步拖引干扰是对抗PD雷达的有效方法。
Based on the adoption of elastoplastic damage theory and effective strain assumption, weld metal coupons were tested under repeated pull and their damage evolution law was determined.
基于各向同性弹塑性损伤假定和应变等效假设，采用重复拉伸的试验方法，得到了焊缝金属的损伤演化规律。
Effective dolphin kicking is done with relaxed ankles which pull the water and provide a point of balance and leverage for the swimmer.
放松的踝关节是高效的海豚踢的关键，让泳者保持平衡并给予发力点。
My baby 2 months when the physiological diarrhea pull more than three weeks, it is to eat a lot less effective drugs, and later gave Golden Bifid baby to eat, eat less than a box of how not pull.
我家孩子2个月的时候生理性腹泻拉了3个多星期呢，也是吃了很多药不太管用，后来就给孩子吃金双歧，吃了不到一盒就不怎么拉了。
My baby 2 months when the physiological diarrhea pull more than three weeks, it is to eat a lot less effective drugs, and later gave Golden Bifid baby to eat, eat less than a box of how not pull.
我家孩子2个月的时候生理性腹泻拉了3个多星期呢，也是吃了很多药不太管用，后来就给孩子吃金双歧，吃了不到一盒就不怎么拉了。
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