发黑

Beishan river is one of the most serious contaminated river which is nigrescence and effluvium and the COD is between 800 mg/L and 2000 mg/L.

北山河是温州黑臭极其严重的河流之一，河水发黑，具恶臭， CODCr 高达800-2000mg/L ，治理难度极大。

With simultaneous salmon ella or swine erysipelas infection, the spleen may be enlarged and dark

由于同时感染沙门氏菌病或猪丹毒，脾脏可能增大和发黑。

There was a soft lump right on my belly button,it had gotten more and more bigger,and it had become ashine and nigrescent.My master took me to the vet,and the vet said it was a disease so called"here-near"(VV's master notes:maybe it is the same as exomphalos).The vet suggested that we'd better have a surgery to remove the lump,he told us it was a very small surgery and we needn't worry about it at all.

我肚脐眼上有个小软包，最近越来越大了，并且有点发亮发黑，主人带我去看兽医，兽医说是一种叫"赫尔尼亚"的病，原因是刚出生的时候脐带没有扎好，导致肠子里的小东西不断掉下来，堆积在肚脐眼上结成了块，现在需要动手术拿掉它，兽医说这是一个很小的手术，告诉我们不用担心。

He was very weak and was afflicted with a giddiness , which at times blinded him.

他虚弱极了，晕晕乎乎的眼前一阵发黑，随时都会摔倒。

Custom metal vitrine, speakers, ipod, song with artist singing in his own private language, paint, Indian hair, male battus philenor butterfly and blackend ash from a gingko tree

定制的金属玻璃柜，扬声器，ipod，用艺术家本人自己的语言唱的歌，油漆，印地安人的头发，雄性的battus philenor蝴蝶，以及发黑的银杏树的灰烬

Selection above average grade 2 degrees open of carnation does keepfresh experiment to indicate:The carnation that uses clear water and Hollands antistaling agent,The 10th day flower petal color appears black and obscure,petal b ecome soft , Blossom head and side appears dry and shrink,Can't bloom well,but carnation it use huaxianzi keep fresh liquid can open well,The sideHave no curl and dry ,The color is gorgeous and bright,Life-span of flower be no lower than 20 days.

选取的中上级2度开的康乃馨做的瓶插试验表明：使用清水和荷兰保鲜剂的康乃馨，第10天时花瓣出现颜色发暗发黑、发软、花头花边干缩不能充分绽放，而使用花鲜子保鲜液的康乃馨能充分开放、无卷边糊边、颜色鲜艳发亮，花期不低于20天。

I hear a wild, hysterical laugh, a room full of lockjaw, and the body that was black glows like phosphorus.

我听到一阵放荡的大笑，这儿是满满一屋子患了牙关紧闭症的人，那个发黑的身体像磷一样在发光。

Those long-haired singers dressed in black boots formed a world I had never touched upon, which made me surprised and curious.

那些长发黑靴的歌手，是我从没有接触过的世界，让我惊讶而且好奇。

In machining the surfaces of alu minium alloy parts a re corroded by emulsion frequently.

文摘：介绍了应用复合缓蚀剂的协合效应，来防止铝合金件在机械加工中，因乳化液的腐蚀，使工件表面发黑的现象。

In this paper,the laser hardening technological parameters and the nigrescence technology with surface oxidation have been studied on tiny workpieces of 4Cr13 stainless steel,while the influences of the laser technology and various lapping ratios on hardness,depth and microstructures of the hardening layer have been explored.

研究了 4Cr13不锈钢细小零件激光表面强化工艺参数和材料表面氧化法发黑工艺，探讨了激光工艺和不同的搭接率对强化层硬度、淬硬层深度和表层组织结构的影响。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。