Created by cikgulei 科学 滑轮 Age 7-12 level: 三年级 Chinese Author's Instructions 滑轮是一种周边有槽的轮子,能穿上绳子或链条,用来移动重物,使重物上升或下降。它是一种简单机械,能应用在人们生活中,帮助减轻人们的工作。 My Google Classroom Courses × 0 classes selected (0 students total) Quick Access Select all classes (0 classes) All Classes Loading courses... Cancel Share Share to selected Course __COURSE_NAME__ __STUDENT_NAME__ (__STUDENT_EMAIL__) 第十课:机械 Download Worksheet Validation Check my answers Emails my answers to my teacher Full name Group/level School subject Teacher's email or key code Close Submit Validating worksheet... (12) Your answers have been sent to your teacher. Good luck! OK We encountered an error submitting your answers. Please try again. OK Advertisement | Go Ad Free Created by cikgulei 科学 滑轮 Age 7-12 level: 三年级 Chinese Author's Instructions 滑轮是一种周边有槽的轮子,能穿上绳子或链条,用来移动重物,使重物上升或下降。它是一种简单机械,能应用在人们生活中,帮助减轻人们的工作。