抽油机具有双链条同步驱动换向机构,可实现增距式柔性换向;
The Pumping unit has a double-chain synchronous driving and reverse mechanism, and can realize flexible reverse with stroke increment;
后来我才想到,当时应该用我的1.4X的增距镜(1.4x extender),不仅能再减弱一挡光线,还能离太阳更近些。
I didn't think of it until afterwards, but I could have put the 1.4x extender on which would have cut out another stop of light and got me closer to the sun.
目的:总结应用颅内外联合径路手术矫正7例重度先天性眶距增宽症的方法和效果。
Objective To conclude the reconstruct method and therapy results of orbital hypertelorism by combined intracranial-extracranial approach in 7 cases.
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