用上下法（up-and-down procedure，UDP）检测其对SD大鼠的急性毒性，并在荧光显微镜下观察其在SD大鼠主要脏器的分布情况。
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上下级法院审级监督关系 supervision through the judicial hierarchy
上下文无关文法 [计] context-free grammar ; CFG ; Context Free-Grammar GFG ; Kontextfreie Grammatik
上-下法 Up-and-Down Procedure
用上下法 up-and-down procedure ; UDP
变形上下法 up down transformed rule
随机上下文无关文法 [计] Stochastic context-free grammar ; SCFG ; free grammar
上下文有关文法 context sensitive grammar ; [计] context constraint grammar
限界上下文文法 [计] bounded context grammar
由上而下法 Top-Down method
如果螺栓无法拆卸，将使用一种专门设计的工具把上下法兰盘撬开。
If not, a specially designed tool will be used to pry apart the top and bottom flanges.
本文将反应堆压力壳的球顶盖、上下法兰、螺栓、筒体及双道O形环作为一个超静定系统进行了应力和变形分析。
The reactor pressure vessel composed of spherical top and lower heads, upper and lower flanges, bolts, cylinder and two O-rings, as a static indeterminate system has been studied.
篮球滴下法院通过上上下下弹起它。
The basketball is dribbled up the court by bouncing it up and down.
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