壳斗浅碟状, 高 4-8 毫米,宽1.5-2.5厘米, 包著坚果基部.Cupule discoid , 4 - 8 mm 1.5 - 2.5 cm, enclosing basal part of nut.白垩纪尚无壳斗科可靠的大化石记录,微化石需要进一步研究才能确定亲缘关系以及古新世壳斗科已经分化出两个类群.No creditable macrofossil record of the Fagaceae exists in the C...
这些蜗牛体宽不超过1厘米。The snails are no larger than one centimetre across.出席的人不超过20名.There weren't beyond twenty people present.一种体积不超过10便士硬币大小的新机器能防止婴儿猝死。A new machine no bigger than a 10p piece could help save babies from ...
Bionics is a kind of marriage between biology and electronics.仿生学是生物学和电子学的结合物.The students inquired of their teacher about the science " bionics ".学生们向老师了解仿生学的问题.The impotance of bionics suddenly hits you.我会对仿生学的重要性恍然大悟....
静电键合是片状材料封接的一种重要手段,讨论了玻璃在电场作用下的键合过程.Electrostatic bonding is an important encapsulating means for the materials at the chip or wafer level.如果把电键断开,就会得到反向感应电流.Open the key , and an induced current in the opposite directio...
那工头把自己的小汽车让与了债权人.The boss assigned his car to his creditor.墨西哥和菲律宾均已与商业银行债权人达成了协议。Mexico and the Philippines have both concluded agreements with their commercial bank creditors.债权人尚未宣布他们拖欠债款。The creditors haven't de...
The main gangue mineral is quartz and for 97 %.所含脉石矿物主要为石英,占矿物97%.Calcite is the dominant gangue mineral in the Furong tin polymetallic deposit.方解石是芙蓉锡矿田重要的脉石矿物.Coal gangue is the largest source of industrial solid waste...