查询词典 plano-concave

Seeds brown or black, cotyledons plano-convex.

种子棕色或黑色，子叶平凸。

Fruit a pome, with persistent sepals at apex; carpels bony when mature, each locule with 1 seed; seed erect, cotyledons plano-convex.

果一梨果，具宿存萼片在先端；成熟时的心皮骨质，每子房室具1种子；种子直立，子叶平凸。

Based on the relationship between the numerical aperture of the objective lens and scale pitch, this study chooses a suitable Plano-convex lenses available on the market, so as to approximate the diameter of the focusing spots to scale pitch. Also, by using the optical path of an optical encoder similar to the nanoscale, the changes in the surface profile of the scale can be measured directly, so as to obtain the two quadrature sinusoidal signals. By counting the zero crossing of these two quadrature sinusoidal signals and calculating the interpolation value of these two quadrature sinusoidal signals, the moving direction and moving displacement value of the scale can be obtained.

研究中再以搭配物镜的数值孔径与尺条间距的关系，选择ㄧ适当的市售平凸透镜，使聚焦光点的直径与尺条的间距相近，并使用相同於奈米级长行程双雷射聚焦读头装置的光路设计，如此将可藉由直接量测尺条的表面轮廓变化，以获得一组正交弦波讯号，继而利用讯号四分割与细分割处理，计算出尺条之移动方向与移动量，研制出一实用性长行程双雷射聚焦读头光学尺。

Seeds with membranous or fleshy seed coat; endosperm lacking; embryo straight; cotyledons elliptic, plano-convex, neither convolute nor folded; hypocotyl partly included between cotyledons.

种子有膜质或肉质种皮；无胚乳；胚直立；子叶椭圆形，平凸，不旋卷也不折叠；下胚轴部分藏于子叶间。

Seeds with membranous seed coat; endosperm lacking; embryo straight; cotyledons elliptic, plano-convex, neither convolute nor folded; hypocotyl partly included between cotyledons.

种子具膜质种皮；无胚乳；胚直立；子叶椭圆形，平凸，不旋卷也不折叠；下胚轴部分藏于子叶间。

Seeds pyriform or rarely irregular in shape; seed coat membranous or thin and brittle; endosperm copious or ± scant, fleshy; embryo relatively large, bent double or rarely broadly horseshoe-shaped; cotyledons plano-convex and linear or ± flattened and elliptic-oblong; hypocotyl superior.

种子梨形或很少外形不规则；种皮膜质或者薄而脆；丰富的胚乳或者不够，肉的±；胚较大，弯曲或者很少宽马蹄形；子叶平凸和线形的或多少扁平和椭圆状长圆形；下胚轴上位。

The output beam quality can be improved by adopting Gaussian reflectivity coupling output mirror, using plano-convex unstable cacity, Nd: YAG, and electro-optic Q setting solid laser in the experiment.

使用高斯反射率耦合输出镜可较好地改善其输出光束质量，设计了平-凸非稳腔，使用Nd：YAG，电光调Q 固体激光器进行实验，获得了较为平滑的远场光强分布，实验结果表明高斯反射率输出镜可较好地改善固体激光器中非稳腔输出光束质量。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。