结果表明：（1）相思树皮结构为叠生构造。
The research results show below: (1) The bark of Acacia spp.
鲨鱼的软骨骨骼构造使得其尸体腐烂的很块，最终，它们的一生只会留下极少的线索。
Sharks' cartilaginous skeletons decay quickly, leaving just tiny clues as to their lifestyles.
通过三年生产实际的考验，证明仪器性能稳定、使用方便、构造合理、轻便且易于推广。
Through three years'aperation, the device perfects its performance in its stability, portability and efficiency with sound structure for the evenness tests.
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