容积变化 meaning in Chinese

volume changes

Testing methods for volume change of cellular concrete
多孔混凝土容积变化的测试方法
Variation of sensor volume
传感器容积变化量
Simulated experiments effects of intrathoracic pressure change on hemodynamics three models that simulated the anatomic arrangement of the venous return systems and chest cavity were established to investigate the hydromechanic principle of the different influence of the itpc on the ventricular fillings . effects of intrathoracic pressure change on the motion of interventricular septum ( ivs ) acuson ' s sequoia 512 ultrasonographic system was used in this study to record the m - mode and two - dimensional cineloop images of the simulated interventricular septum movement with different intrathoracic pressure changes
指标观测观察并记录外周静脉压和模拟胸腔压力分别变化及同时变化时，模拟右心室的容积变化；观察并记录模拟胸腔压力变化时，模拟肺血管床和左心室内压力的变化；用sequoia512超声心动图仪观察胸腔压力变化对模拟心脏室间隔运动的影响。