气孔,Stomata
1)Stomata[英]['st?um?t?][美]['stom?t?]气孔
1.A Simplified Method for Observing Stomata by Shaving off Mesophyll Cells to Obtain Epidermis from Leaf and Its Application;一种获得叶片表皮观察气孔的简易方法及其应用
2.Study on Stomata Characters of Tetraploidy Lilium concolor Salisb;渥丹百合多倍体气孔性状的调查研究
3.The effects of shadowing on stomatal and photosynthetic characteristics of Trifolium repens;遮荫环境对白三叶草气孔和光合特性的影响
英文短句/例句

1.The air passage is called the air bleed.空气通道叫通气孔
2.Gaseous excretion takes place by diffusion through the stomata and lenticels.气体通过气孔或皮孔释放的方式排出。
3.relating to or constituting plant stomata.与植物气孔有关,或组成植物气孔
4.Plug the fixed containers around air vent of F.O. tanks.收紧油舱透气孔处油池放油孔的塞子。
5.A vent to permit the escape of air or other gas.气孔空气或其它气体通出的通道
6.Open the air hole;the fire is dying down.把气孔打开,火要熄了。
7.To lap better, all porous holes.上面净是气孔,便于舔食。
8.gross blow hole大气孔(铸件热节上)
9.Study on Relationship of Porosity & Pore Structure of Metallurgical Coke with Thermal Performance冶金焦气孔率和气孔结构与热性能关系的研究
10.Oxygen and carbon dioxide from the air enter through the stoma.氧和二氧化碳从空气中进入气孔
11.Optimal Design of Compressor Blade Profile and Aspirated Hole;压气机叶片型面及吹吸气孔优化设计
12.Breathe in through the right nostril three times, and exhale through the mouth. Repeat with left nostril, exhale through the right.以右鼻孔吸气三次,以嘴呼气。换左鼻孔重复,以右鼻孔呼气。
13.cutting machine for rubber inner tube valve holes橡胶内胎气门嘴孔挖孔机
14.POTENTIAL AREA FOR LITHOLOGIC RESERVOIR IN MEMBER 2 OF KONGDIAN FORMATION F KONGNAN AREA孔南地区孔二段岩性油气藏潜力方向
15.Hole Clearing by air-lift reverse circulation method in bored piles冲(钻)孔灌注桩气举反循环清孔工艺
16.tyre valve hole misalignment轮胎气门嘴孔位置不正
17.gas-filled porosity天然气充满的孔隙度
18.orifice well tester孔板式天然气流量计
相关短句/例句

porosity[英][p?:'r?s?ti][美][p?'rɑs?t?]气孔
1.Weld porosity shortcomings reasons for the formation and Preventive measures;焊缝气孔缺陷的形成原因及防治措施
2.Prevention and mechanical analysis of porosity formation in pulsed CO_2 laser welding of 30CrMnSiA;脉冲CO_2激光焊接30CrMnSiA气孔控制及机理分析
3.Laser welding of high nitrogen steel 1Cr22Mn16N Ⅰ. Influence of shielding gas composition and heat input on N-content and porosity of weld metal;1Cr22Mn16N高氮钢激光焊接 I.焊接保护气体组成和热输入对焊缝氮含量及气孔性的影响
3)stoma[英]['st?um?][美]['stom?]气孔
1.Comparison of stomatal morphology and density between tissue-cultured plantlets and earth-cultured ones;草莓试管苗与土培苗气孔形态和气孔密度的比较
2.Effects of Plant Growth Regulators on Stoma in Low Epidermis of Tobacco Leaves;植物生长调节物质对烟草叶片下表皮气孔的影响
4)Gas Hole气孔
1.Influence of Vacuum Dead-point on Gas Hole for Die Casting;抽真空截止点的位置对压铸件气孔的影响
2.Formation cause and prevention of gas holes in stainless steel wirerope clamper castings produced by investment casting;不锈钢钢丝绳夹座熔模铸造气孔的产生与防止
3.Formation and Prevention of the Gas Holes in Investment Cast Steel Casting;熔模铸钢件气孔的产生与防止
5)pore[英][p?:(r)][美][p?r]气孔
1.Study on pore problem of GAP low-oxygen propellant during curing process;GAP贫氧推进剂固化气孔问题研究
2.Analysis and Solution of Pore Defect of WD615 Cylinder Head;WD615气缸盖气孔缺陷的分析与解决
3.Process Study on Reducing Pore in Production of Solid Composite Propellant;复合固体推进剂生产中减少气孔的工艺研究
6)air hole气孔
1.Study on reducing air hole in copper anode sheet;减少铜阳极板中气孔的探讨
2.Prevention of air hole on aluminium alloy with MIG welding;铝合金MIG焊时气孔的预防
延伸阅读

气孔分子式:CAS号:性质:(一)stoma 植物气生部分的表皮小孔,用以进行气体交换。气孔是光合气体交换和在蒸腾作用中逸散水蒸气的主要途径。每个气孔被一对保卫细胞包围着。通过细胞膨胀改变细胞的形态,从而控制着气孔小孔径的大小。当保卫细胞膨胀低的时间,这两个细胞紧紧贴在一起,小孔就关闭了;而膨胀高的时间,小孔就张开。膨胀的变化,是由钾浓度变化引起的渗透反应,细胞内的水分进出的结果。(二)blow-hole 材料表层或内部由于气泡产生的洞穴。如焊接过程中,熔池金属中的气体在金属冷却以前未能来得及逸出,而在焊缝金属中所形成的气孔及存在于焊缝表面的气孔。可以是单个的或密集的,或是极小的圆气孔,也可以是较大的条状气孔,甚至可形成贯穿形大气孔。单个的小气孔对材料的力学性能影响不大,密集的或大个气孔则会减小截面,降低材料的力学性能,特别是韧性。分布于材料表面如气孔也对材料表面性能有一定影响。