1)  Peutz-Jeghers syndrome
黑斑息肉综合症
2)  black spot
黑斑
1.
Causes of surface black spot and cracks of sponge clamp were analyzed by means of appearance and metallographic observation.
采用宏观和微观组织观察,分析了海绵钳表面黑斑及开裂的原因。
2.
Oxide scale formation during cooling and pickling of Q195 and ST13 steel sheets at different temperature were studied to study the black spots on cold rolled pickled steel sheets.
针对冷轧酸洗钢板黑斑缺陷问题,对Q195、STl3钢在不同试验温度下进行了氧化铁皮的生成、冷却、酸洗试验,对试验后的试样和生产现场钢板的表面进行了微观分析。
3.
The examination was made on the black spot defects which occurred on the local areas of the surface of 2A12-T451 plate after anodized in chromic acid.
对ZA12－T451板材经铬酸阳极氧化后局部出现黑斑缺陷进行了试验研究。
3)  freckle
黑斑
1.
The microstructure of GH3044 with freckles was investigated by SEM and EDAX and the variation of liquid concentration during solidification and equilibrium phase transformation was calculated by the Thermal-Calc analysis.
利用扫描电镜和能谱分析研究了产生黑斑的GH3044组织,采用Thermal-Calc分析方法研究了合金凝固过程中液体成分变化,并计算了合金凝固时液体密度的变化,给出了GH3044合金平衡凝固时密度反转的范围。
2.
The research development of channel segregation (freckle) during solidification in multi-component systems is discussed, including the freckle characteristic, influencing factor and physical feature.
对多组元复杂体系(尤其是高温合金体系)在凝固过程中形成的通道偏析即黑斑的研究现状进行了评述,包括黑斑的存在方式、影响因素和物理特征等。
4)  freckle
“黑斑”
1.
On formation of macroscopic “freckle” defect feature in Ni-Cr-Mo-Fe-W alloy;
Ni-Cr-Mo-Fe-W合金中宏观“黑斑”缺陷特征的形成
5)  black spots
黑斑
1.
According to analyzing the phenomena of black spots forming on bead wire,it is considered that such reasons are led to by the water remain on the steel wire after it being washed and the improper packing way as well as the too humid storing environment The methods for solving the problem have been put forwar
通过对胎圈钢丝产生黑斑现象的分析，认为黑斑产生的原因是钢丝在水洗后残留的水迹以及包装方式不妥及存放环境的湿度过大所致，提出了解决办法。
2.
Black spots occurred in vacuum ceramic envelope during ceramice metallizing were observed and analyzed.
对陶瓷管壳在金属化过程中产生的黑斑进行观察和检测分析 ,对其产生原因进行了探讨并提出一些改进措施。
3.
It is found that the bubbles and black spots on the Al electrode surface was reduced and the luminescence performance of the device was improved obviously after the heat treatment.
发现处理后的器件阴极表面的气泡及黑斑明显减少。
6)  Freckles
黑斑
1.
Mechanisms for Macro Segregation Freckles and Their Criteria;
宏观偏析黑斑形成机理及其判据
参考词条
补充资料：杨树黑斑病的综合防治
    症状：一般发生在叶片嫩梢及果穗上，自上而下蔓延，以危害叶片为主，发病初期首先在叶背面出现针状凹陷发亮的小点，后病斑扩大到1毫米左右，黑色、略隆起，叶正面也随之出现褐色斑点，5-6天后病斑(叶正、反面)中央出现乳白色突起的小点，即病原菌的分孢子堆，以后病斑扩大连成大斑，多成圆形，发病严重时，整个叶片变成黑色，病叶可提早脱落2个月；苗木幼嫩时，若全部叶片枯死，易导致植株死亡，若小苗于出土时发病，小叶及苗颈将全死变黑，病苗扭曲不直。
    病原：该病由半知菌亚门盘二孢菌属的真菌引起，其分生孢子盘生于寄主表皮下。
    发病规律：病菌以菌丝体在落叶或枝梢的病斑中越冬，次年五六月间病菌新产生的分生孢子借风力传播，落在幼苗叶片上，由气孔侵入叶片，3-4天出现病状，5-6天形成分生孢子盘，进行再侵染，7月初至8月上旬若高温多雨、地势低洼、种植密度过大，发病最为严重，9月末停止发病，10月以后再度发病，直至落叶。
    综合防治：应选用抗病品种。注意及时间苗，改善通风透光条件，搞好排水等田间管理，减少发病条件，苗圃地应避免连作或避免将苗圃设在感病植株附近，可有计划的换茬育苗，种子带菌需化学处理，防止实生苗发病，可用85%百菌清可湿性粉剂1000-1500倍液或用甲基托布津和多果定喷粉处理干燥种子。发病期间，苗圃和成林用200倍波尔多液或85%代森锰锌250倍液喷洒，雨季喷药时，药水中应加入0.3%明胶(或豆粉汁、豆浆)，防止被水冲洗掉，并应随时清扫处理病叶、落叶，消灭病原菌。（来源：《中国花卉报》2004.06.24）
说明：补充资料仅用于学习参考，请勿用于其它任何用途。