三级片视频播放,精品三级片在线观看,A级性爱视频,欧美+日韩+国产+无码+小说,亲子伦XX XX熟女,秋霞最新午夜伦伦A片黑狐,韩国理伦片漂亮的保拇,一边吃奶一边做边爱完整版,欧美放荡性护士videos

HY系列調速多用振蕩器（ HY Vertical hulti-pirpose Vibrator is a kind） 介紹：
 

    調速多用振蕩器是一種將多種樣品在同一環境條件下，上下振蕩、左右振蕩、回旋振蕩，混和均勻的一種生化儀器，該調速多用振蕩器運行平穩，噪音小，振蕩速度無極可調，采用不銹鋼彈簧夾具（也可定制 夾具），可配多種試瓶，滿足不同客戶需要。是生化、生物工程、教學、微生物及醫學等行業研究和生產中的優選設備。 HY Vertical hulti-pirpose Vibrator is a kind of kiochemistry instruments which can vibrate up and down,to the left and right,circling round and be mixed even. The series are operated stably,linle noise,vibrating at the stepless speed. Use stainless steel spring fixture for all-use.（You can also order special fixture）. It can match many kinds of trial bottles,meeting the needs of diferent customers. It’s first-elected instruments in line research and prodwing,such as,biochemistry,biohegy engineering,teaching,micorbiology and so on.