“shifting dunes control at Ningxia Shapotou Section of the Baotou-Lanzhou Railway”的概念、定义、翻译、参考文献-科学参考

单词	shifting dunes control at Ningxia Shapotou Section of the Baotou-Lanzhou Railway
释义	shifting dunes control at Ningxia Shapotou Section of the Baotou-Lanzhou Railway Encyclopedia 理学风沙工程学释 shifting dunes control at Ningxia Shapotou Section of the Baotou-Lanzhou Railway包兰铁路宁夏沙坡头段流沙治理中国最早建设的沙漠地区铁路线包兰铁路宁夏沙坡头段铁路综合防护体系。
随便看	positive excess coefficient positive existential sentence positive extension positive eyepiece positive feedback positive feedback amplifier positive film positive flower structure positive formula positive function positive functional positive fundamental sequence positive glow positive Grassmannian positive half-trajectory positive helicity spinors positive Hermitian kernel positive Hermitian operator positive homogeneous function positive hull positive image positive index of inertia positive infinity positive integer positive integral kernel

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