1. The midgut gland cell differentiation occurs at Z2. There are 4 types of cells, i. e. , embryonic cell (E-cell), fibrillar cell (F-cell), blister cell (B-cell) and resorptive cell(R-cell).
中肠腺小管上皮在Z2期细胞已有了分化，由4类细胞组成，即胚细胞（E细胞）、纤维细胞（F细胞）、泡状细胞（B细胞）和吸收细胞（R细胞）。
2. I am company mainly produces V-cone-pulley, 105 cone-pulley, Cone sets to connect disk, Gezhongfeibiao cone hole, straight-set pulley and connectivity.
目前我公司主要生产V型锥孔皮带轮，105锥孔皮带轮，锥套，连接盘，各种非标锥孔、直孔皮带轮和连接盘。
3. The heritability of cone width and one-grain weight was the highest, and the variation range of carpopodium length/cone and cone length/cone width was higher.
果宽与种子每粒质量等性状遗传力最高，果柄长／果长、果长×果宽等性状变异幅度大。
4. I am company mainly produces V-cone-pulley, 105 cone-pulley, Cone sets to connect disk, Gezhongfeibiao cone hole, straight-set pulley and connectivity.
目前我公司主要生产V型锥孔皮带轮，105锥孔皮带轮，锥套，连接盘，各种非标锥孔、直孔皮带轮和连接盘。
5. The computing formula of theoretical cone angle of the wormwheel addendum cone and dedendum cone can be derived yet.
推导出蜗轮齿顶圆锥的理论锥角计算公式及齿根圆锥的理论锥角计算公式。
