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- Two guard cells together encircle each stoma and control the opening and closing of the stomatal aperture. 每个气孔由两个保卫细胞包围来控制气孔的开闭。
- Indica-japonica cross varieties generally had a wider stomatal aperture and no stomatal depression at noon even at high light intensity. 籼-粳杂交品种一般气孔大，中午光强度高时气孔也不关闭。
- There are four types of stomatal aperture including anisocytic,anomocytic,paracytic and actinocytic distributed on epidermis,and the former two types are occupied mostly. 均有气孔器分布，类型多样，以不等细胞型和无规则型为主；
- With the decrease of water supply, the width of stomatal aperture was also decreased, while both stomat frequency and stomatal aperture length of various organs increased. 随着灌水次数的减少，各器官气孔密度呈增大趋势，气孔器及气孔孔径表现出长度增加、宽度减小的特征。
- With the ocvation increasing,the stomataldensity on adaxial and abaxial surface of the leayes,the protruding degree of the stomatal appara-tus,the substomatic chamber and the stomatal aperture are increased. 结果表明：随海拔升高，植株叶片上气孔分布区域增大，叶两面气孔数量增加，气孔向外突起程度增加，孔下室及气孔张度增大。
- The epidermis of culm of S. alterniflora, S. patens and S. cynosuroides is all made up of long cells, short cells (cork cells and silica cells), salt glands and stomatal apertures. 互花米草、狐米草和大绳草的表皮均由长细胞、短细胞(栓质细胞和硅质细胞)、盐腺和气孔器组成。
- The aperture in the door is so wide. 门上的孔隙太大了。
- (2) "Longxianhuosuan" showed a lower stomata number but a larger stomatal aperture in its scape surface than "Gailiangsuan"; 角质层较薄；(2)“陇县火蒜”比“改良蒜”蒜薹表面的气孔数量少，但开张度大；
- We saw light through a small aperture in the wall. 我们透过墙上的小孔看到了亮光。
- Stomatal aperture 气孔开度
- An aperture through which matter is discharged. 输出口，喷嘴物体被释放出的开口
- The only light came through a narrow aperture. 仅有的光来自一个小孔。
- Guard cells : control the size of stomatal opening. 保卫细胞:控制气孔张开的大小.
- Set to the desired lens aperture. 设置所需的镜头光圈。
- An insulating lining for an aperture through which a conductor passes. 绝缘套管为导体的通过提供缝隙的绝缘套管
- A light came through the narrow aperture. 小孔里透过一缕光线。
- Into this aperture a droplet of mercury was poured. 一小滴水银滴进了这个小孔。
- The first aperture was sufficiently large to enter. 最初出现的洞口已可容纳一个人进去。
- We see light through a small aperture in the wall. 我们透过墙上的小孔看到了亮光。
- For flash photography, set the aperture at f.5.6. 用闪光照相，要把光圈孔径定为 5.;6。
