题目内容
检测近距离的塑料瓶，选用什么传感器好（ ）。
查看答案
搜索结果不匹配？点我反馈
更多问题
接近开关与被检测体的工作距离应设定在额定距离的2/3以内，且越近效果越好。
These experiments also show that optimists do much better in school and at work. They regularly exceed the predictions of aptitude tests.
His heart is overflowing with awe and gratitude for the beauty of her, the perfection.
Then she picks up the baby, who immediately becomes lively and makes happy sounds. "My God," the father says. "She's deaf." "No, she's not," the mother says. "I mean, it's too soon to say a thing like that. Look, she's brand-new. Her eyes don't even focus yet."
微信支付 
支付宝支付