It is great meaningful to distinguish pure strain tilapia and hybrid in morphology.
如何在外部形态上区分纯种和各种杂交鱼，在实际生产中有十分重要的意义。
They were rare , and the pure - strain wild turkeys had begun to interbreed with farmers domestic stock.
纯种野火鸡已经和农户的家养火鸡混种，品种质量有所下降。
These formulae give us the stress and strain in a prismatic beam when it is subjected to pure bending .
当棱柱形梁受纯弯曲时，这些公式给出了它的主力和主变。
The effects of cyclic strain amplitude history and mean strain on the cyclic deformation behavior of pure copper were investigated.
揭示了紫铜在应变循环下的循环应变幅值历史、平均应变对循环特性的影响；
Plasticine is used in the plane strain experiment and pure lead in the axisymmetric one.
首先采用塑胶泥和纯铅两种材料进行流动规律实验。
After studying the genetic data, however, virologists concluded that the 1918 virus started out as a pure avian strain. A handful of mutations had enabled it to easily infect human hosts.
然而，在研究了基因数据之后，病毒学家认为1918年的病毒一开始是一种纯的禽类病毒株，一些变异使得它可以轻易感染人类宿主。
In the matrix, pure shear was dominative in locations where strain was inhomogeneous, and the direction of elongation tended to parallel the shear direction near the disconnected intensified layer;
基质层中，靠近断开的能干层处的剪切变形中纯剪切占优势，伸长方向趋向于平行剪切方向；
The strain of lilacs in the spring, full of trees then leave word color floret, that is not gorgeous, want to tip size, bloom, but pure and graceful, like a piece of purple mist blurred.
⊙、那株紫丁香到了暮春，满树便开出字色的小花，那话并不艳丽，想笔尖大小，绽放开来，却纯净雅洁，犹如一片紫色的迷离的雾。
METHODS The pure companion fungus, strain of G. umbellata and Armillaria mellea on tree trucks were inoculated in flowerpots and covered by sandy soil.
方法以树棒为载体 ，粗砂为基质 ，纯猪苓菌种、纯猪苓菌丝形成菌核伴生菌和蜜环菌为供试菌株 ，采用花盆栽培方法。
The invention discloses a method for planting pure white needle mushrooms with chicken dung as a culture material. The planting method comprises the following steps: a strain is prepared;
本发明公开了一种用鸡粪便作培养料种植纯白金针菇的方法，该种植方法包括如下步骤：菌种的制备；
The invention discloses a method for planting pure white needle mushrooms with chicken dung as a culture material. The planting method comprises the following steps: a strain is prepared;
本发明公开了一种用鸡粪便作培养料种植纯白金针菇的方法，该种植方法包括如下步骤：菌种的制备；
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