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- black poplar grove 黑杨小林
- Some kinds of acid, such as oxalic acid, sulphuric acid, hydrochloric acid and sulphur dioxide, were used to treat black poplar(populus nigra )APMP respectively. 用草酸、硫酸等对黑杨APMP浆进行酸化处理，研究了酸化对黑杨APMP浆的光致返黄和热致返黄的抑制作用并对其机理进行讨论。
- The paper introduces the technological process, equipment, technological conditions and preparation results of making chemimechamicalpulp with APSP ultra-short term black poplar of small diameter log. 介绍了APSP超短期黑杨小径材化机浆的流程、设备、工艺条件和研制结果。
- The Comparative Trial of some Black Poplar Clones in North of Henan Province 豫北黑杨无性系的生长比较试验
- A Primary Report on Cultivation Pattern for Southern Type of Black Poplar 南方型黑杨栽培模式研究初报
- Establishment of Site Index Table for Black Poplar in Jiangsu Province 江苏省南方型黑杨地位指数表的编制
- Measurement and Evaluation on Wood Quality of Hybrid Clones from Black Poplar 几个黑杨杂交无性系的材质测定及其评价
- Research on tissue-culture reproductive systems of black poplar group 黑杨派杨树组培再生系统的研究
- He was in black from crew to earing. 他全身上下都穿着黑衣服。
- He whipped up a pistol and shot at the black bear. 他急忙抓起手枪，向那头黑熊射击。
- Many people were taken off by the Black Plague. 许多人被黑死病夺去了生命。
- The man is carrying a small black plastic handbag. 这个人提着一个黑色的小塑料提袋。
- The old trade in black ivory is on more. 昔日非洲黑奴的买卖已不复存。
- The black sedan suddenly drew out into the traffic. 黑色轿车突然开动，驶进了车流。
- I have a snag in my best black tights. 我最好的一条黑裤袜给划破了。
- He fell down the stairs and was all black and blue. 他从楼梯跌下而青一块紫一块了。
- Black and white show a striking contrast. 黑和白形成明显的对比。
- She buy a black nightie to wear on her honeymoon. 她买了一件黑色睡衣准备在蜜月时穿。
- Jim staked all his money on the black horse. 吉姆把所有的钱都押在那匹黑马上了。
- During the war we had to black out all our windows. 战时我们必须用黑布遮着窗口以免透光。
