Four species of the mammal live in Asia, with two in Africa.
有四种穿山甲生活在亚洲，另有两种生活在非洲。
Results: The four species were positive in TLC identification.
结果：四味药材的薄层色谱鉴别呈阳性。
Cycloidal gear of four-rod mechanism is a species of novel combination mechanism.
摆线齿轮四杆机构是一类新颖的组合机构。
Four new species and some combinations of Bamboos.
竹类四新种及若干新组合。
Four new species and some combinations of Bamboos.
竹类四新种及若干新组合。
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