Sara was not amused by Franklin's teasing...被富兰克林揶揄之后，萨拉的脸上全无笑意。Playing with water can keep children amused for hours.嬉水能让孩子们开开心心玩好几个小时。The patient was amused at the music.听到音乐, 病人感到快乐。It was a challenge, keeping te...
Positioning plate is usually used in fixing the place of anode and cathode plate in electrobath.定位板主要是用来固定阳、阴极板在电解槽中的位置.Double shafts type unwinder with automatic positioning control, automatic tension control, automatic...