英 [ˌpiː ˈbiː] 美 [ˌpiː ˈbiː]
abbr. 铅(plumbum)
Pb //
lead 铅
a soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull grey
同义词: lead / atomic number 82
铅-引用次数:391
The heavy metals in soil analyzed included Cd,Cu,Pb,Cr and Zn.
土壤重金属分析项目包括镉、铜、铅、铬和锌。
铅-引用次数:155
The allocation coefficient trend of Pb and Cd in Salix babylonica was root>stem>leaf.
铅镉在垂柳根中的分配系数大于茎叶。
《祈祷书》
聚丁烯
含铅锰铁帽褐铁矿
含铅锌氧化褐铁矿
电力箱 (power box)
比例带 (proportional band)
语音平衡
语音均衡的
粒子束 (particle beam)
位
...3、水不溶物:0.01; 4、碱度:合格; 5、氯化物:0.01; 6、硫酸盐:0.005; 7、铁:0.0005; 8、重金属(以Pb计):0.0005 苯甲酸钠是用于内服液体药剂的防腐剂,有防止变质发酸、延长保质期的效果,用量过多会对人体肝脏产生危害,甚至致...
中信建投在最新的研究报告中表示,在市场下行的情况下,上市银行PB已经跌至1倍左右,而1倍PB(市净率)是银行股估值低点,股价也接近安全边界。
...;质量轻、连接方便,可广泛应用于大型船舶内部给排水;具有较好的经济性,正被大面积地使用于农村沼气工程。其中的原材料聚丁烯(PB)是1-丁烯-辛烯共聚物,它具有很高的耐温性、持久性、化学稳定性,无毒、无味、无嗅是目前世界上最尖端的高分子材料之一,有“塑料黄...
...紧密粘合为一体的管材,从理论上讲,它的抗内压、抗外压能力都较大,其强度在四种管材中属,从阻隔氧气渗透上讲2、聚丁烯管(PB) 是以聚丁烯-1树脂添加适量助剂,经挤出成型的热塑性管材,聚丁烯在国际市场上称为软。能溶接,长期耐温、耐压性能很好。
A So higher pB star a corresponds to lower ta star a.
所以高的pB星A对应低的TA星。
Exchange the pb-menu.gif with the new version of that image.
将pb - menu . gif替换为该图像的新版本。
“I would have loved it just as much if it was a PB and J sandwich , ” she says.
她说:“就算只有涂上花生酱或者果酱的三明治,我也一样喜欢 。”
Let's choose Latin, the language of scholarship, and so iron became Fe for ferrum and lead became Pb for plumbum and gold is Au for aurum and so on.
那就选拉丁文吧,用于学术的语言,所以,iron就变成了Fe,表示铁元素,铅变成了,Pb,表示铅元素,金变成了Au,表示金元素,等等。
固态化学导论课程节选 : 麻省理工公开课
Bechtel and PB say they don't collect a penny more for overhead than they are entitled to.
That was a big PB for me and it's definitely given me confidence going into the shot.
Quantum announced a Scalar i6000 HD rack-based tape library archiving system that can scale to over 75 PB.