Natural forest stand structure of Pinus tabulaeformis was studied.
对油松天然林的林分结构进行了研究。
She said, you stand up, they'll stand up, it's only natural.
她说，你站起来，他们也会站起来，很自然。
Moreover, the public must be informed about the natural treasures we stand to lose.
此外，公众必须了解我们会失去的自然宝藏。
But it still didn't feel natural to stand up straight.
但是站直了我仍感觉不自然。
The thrust stand has high natural frequencys and good dynamic response.
推力架具有高的固有频率和良好的动态响应。
The thrust stand has high natural frequencys and good dynamic response.
推力架具有高的固有频率和良好的动态响应。
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