The multifinger caliper tool string to be used for casing inspection was centralized using the combination of a strong, optimally placed, spring loaded roller and stiff arm centralizers.
用于检查套管尺寸的多触点井径测量工具管串，采用结实的、安放位置经过优化的、弹簧加载的滚子及刚性臂扶正器进行居中。
Keeping the arm as stiff as a board, swing it in an arc-like motion from the shoulder, making contact in front of the shoulder.
臂要伸直，并保持伸直的姿式不变，以肩为轴把球拍划出弧线，在肩部的前方勾击来球。
Introduction: shoulder pain after a days work, shoulder activity limitations, feels very stiff shoulder, lift his arm.
简介：工作了一天后肩膀疼痛，肩膀活动受限，感觉肩膀很僵硬，抬不起来胳膊。
Introduction: shoulder pain after a days work, shoulder activity limitations, feels very stiff shoulder, lift his arm.
简介：工作了一天后肩膀疼痛，肩膀活动受限，感觉肩膀很僵硬，抬不起来胳膊。
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