Collateral or bicollateral vascular bundle, developmental pith and medullary ray are obvious.

部发，线明显。

Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.

造血-骨位于长骨腔和松质骨间隙内，骨通过造血作用产生血细胞。

Ground meristem The central region of the apical meristem from which the ground tissues of pith, cortex, medullary rays, and mesophyll differentiate. In root meristem it is also called periblem.

位于端分生组织的中部，、皮层、线以及叶肉这些基本组织均是由基本分生组织分化而成。根部分生组织也称为皮层原。

Collateral or bicollateral vascular bundle, developmental pith and medullary ray are obvious.

部发达，射线明显。

Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.

造血-骨位于长骨和松质骨间隙内，骨通过造血作用产生血细胞。

Ground meristem The central region of the apical meristem from which the ground tissues of pith, cortex, medullary rays, and mesophyll differentiate. In root meristem it is also called periblem.

位于顶端分生组织中部，、皮层、射线以及叶肉这些基本组织均是由基本分生组织分化而成。根部分生组织也称为皮层原。

Collateral or bicollateral vascular bundle, developmental pith and medullary ray are obvious.

髓部发达，髓射线明显。

Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.

造血-髓长髓腔和松间隙内，髓通过造血作用产生血细胞。

Ground meristem The central region of the apical meristem from which the ground tissues of pith, cortex, medullary rays, and mesophyll differentiate. In root meristem it is also called periblem.

端分生组织中部，髓、皮层、髓射线以及叶肉这些基本组织均是由基本分生组织分化而成。根部分生组织也称为皮层原。

Collateral or bicollateral vascular bundle, developmental pith and medullary ray are obvious.

髓部发达，髓射线明显。

Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.

血-骨髓位于长骨髓腔和松质骨间隙内，骨髓血作用产生血细胞。

Ground meristem The central region of the apical meristem from which the ground tissues of pith, cortex, medullary rays, and mesophyll differentiate. In root meristem it is also called periblem.

位于顶端分生组织的中部，髓、皮层、髓射线以及叶肉这些基本组织均是由基本分生组织分化而成。根部分生组织也称为皮层原。

Collateral or bicollateral vascular bundle, developmental pith and medullary ray are obvious.

髓发达，髓射线明显。

Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.

造血-骨髓位于长骨髓腔和松质骨间隙内，骨髓通过造血作用产生血细胞。

Ground meristem The central region of the apical meristem from which the ground tissues of pith, cortex, medullary rays, and mesophyll differentiate. In root meristem it is also called periblem.

位于顶端分生组织，髓、皮层、髓射线以及叶肉这些基本组织均是由基本分生组织分化而成。根分生组织也称为皮层原。

Collateral or bicollateral vascular bundle, developmental pith and medullary ray are obvious.

髓部发达，髓射线明显。

Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.

造血-骨髓位于长骨髓腔和松质骨间隙内，骨髓通过造血作用产生血细胞。

Ground meristem The central region of the apical meristem from which the ground tissues of pith, cortex, medullary rays, and mesophyll differentiate. In root meristem it is also called periblem.

位于顶端分生织中部，髓、皮层、髓射线以及叶肉这些基本织均是由基本分生织分化而成。根部分生织也称为皮层原。

Collateral or bicollateral vascular bundle, developmental pith and medullary ray are obvious.

部发达，射线明显。

Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.

造血-骨位于长骨和松质骨间隙内，骨通过造血作用产生血细胞。

Ground meristem The central region of the apical meristem from which the ground tissues of pith, cortex, medullary rays, and mesophyll differentiate. In root meristem it is also called periblem.

位于顶端分生组织中部，、皮层、射线以及叶肉这些基本组织均是由基本分生组织分化而成。根部分生组织也称为皮层原。

Collateral or bicollateral vascular bundle, developmental pith and medullary ray are obvious.

髓，髓射线明显。

Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.

造血-骨髓位于长骨髓腔和松质骨间隙内，骨髓通过造血作用产生血细胞。

Ground meristem The central region of the apical meristem from which the ground tissues of pith, cortex, medullary rays, and mesophyll differentiate. In root meristem it is also called periblem.

位于端分生组织中，髓、皮层、髓射线以及叶肉这些基本组织均是由基本分生组织分化而成。根分生组织也称为皮层原。

Collateral or bicollateral vascular bundle, developmental pith and medullary ray are obvious.

部发达，射线明显。

Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.

造血-骨长骨腔和松质骨间隙内，骨通过造血作用产生血细胞。

Ground meristem The central region of the apical meristem from which the ground tissues of pith, cortex, medullary rays, and mesophyll differentiate. In root meristem it is also called periblem.

顶端分生组织中部，、皮层、射线以及叶肉这些基本组织均是由基本分生组织分化而成。根部分生组织也称为皮层原。