These tributaries are subsequent streams which erode strike valley.

这些支流系即为蚀出走向谷的次生河.

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The difficulty of pinpointing primitive and derived characters remains.

要正确地指出原始性状和次生性状仍然感到困难.

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The stored materials are tested viability every five years.

这种贮藏材料每五年检查一次生活力.

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Secondary xylem consists of pitted vessels, parenchyma fibers and rays.

次生木质部由孔纹导管 、 薄壁组织及射线所组成.

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Lignin is a characteristic component of secondary walls.

木质素是次生壁成份的特征.

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Secondary interstices develop after the rock is formed.

在岩石形成以后再发展次生间隙.

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Substances conveying plant resistance to insects include inorganics, primary and intermediary metabolites and secondary substances.

给予植物抗虫性的物质包括无机物, 初始、中间代谢物和次生物质.

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The most frequent reaction causing the self - sealing of rocks with high secondary permeability is argillization.

这种发生频率很高的、使次生渗透性能良好的岩体产生自封闭现象的反应就是泥岩化.

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The term photochemical oxidants refers to the secondary pollutants formed in photochemical smog.

光化学氧化剂这一词是指在光化学烟雾中生成的次生污染物.

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A strike - valley sand is deposited in the drainage course of a subsequent stream valley.

走向谷砂岩是在次生河谷水系中沉积的.

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Light microscopy has also been useful in studies on the secondary wall of the cotton fiber.

光学显微镜还可以用来研究棉纤维的次生层.

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Secondary uranium minerals are illustrated in a Bureau of Minerial Resources prospector's handbook.

次生铀矿物已列入矿物资源局的普查手册中.

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The plant essential oils is the secondary metabolism of plant.

植物精油是植物体内的次生代谢物质,化学组成较为复杂.

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Calcium nodules and secondary calcites are closely related to climate and micromorphology.

钙质结核发及次生方解石形成既取决于气候,也与微地形有关.

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Female sheep produce one or two lambs at a time.

母羊一次生一到两只羊羔.

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