lead-in-a-pencil 例句 释义: 全部 更多例句筛选 1. The so-called " lead" in a pencil is not lead at all, but chiefly a different form of carbon called graphite. 铅笔中所谓的铅,并不是“铅”,而主要是一种不同形态的炭,称为石墨。 www.ecd123.com©...
B.Carbon.C.Lead.D.Graphite.相关知识点: 试题来源: 解析 D 本题的关键词为graphite,is used to make the“lead”in your pencil.根据关键句可推断出。可能有学生会选[B],因为graphite consists of carbon.但carbon只是一种元素,而不是一种矿物质或金属。反馈 收藏 ...
The device for holding a lead (12) in a pencil comprises a radially acting clamping element (28) which is expandable against an elastic restoring force, while the lead is axially slidable backwards against an elastic restoring force. An independent claim is also included for a pencil with the...
The ‘lead’ in a pencil is made of a mixture of graphite and clay. When the percentage of graphite is increased, the pencil slides across the paper more easily. Which statement explains this observation? A. Graphite has a high melting point. B. Graphite is a form of carbon....
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Related to lead-in:lead pencil,lead poisoning lead-in (lēd′ĭn′) n. 1.Opening or introductory matter:The joke served as a lead-in to a discussion of more serious matters. 2.A program, as on television, scheduled to precede another. ...
A:Yes. You could wire transfer the payment into our bank account or open a letter of credit in our favor. 是的。你可以汇款到我们的银行帐户,或是开一个以我们公司为抬头的信用状。 B:Id like to go ahead and place an order for six hundred units. ...
have lead in one’s pencil 用作动词的意思:充满活力,生气勃勃,干劲十足 用法及例句:He is always bright and jovial among guests. How he has lead in his pencil!在客人中间,他总是表现得乐天合群。他多么有活力啊! 英汉词典参考: have lead in one pencil 分类目录:加拿大俚语、南非俚语、新西兰俚语、...
lead in one's pencil 精力，活力，(尤指)男人性 能力 lead someone on 误导，欺骗(尤指使相信自己引人喜爱)lead up to 由一系列步骤导致导致政变的事件 events leading up to the coup.lead的短语例句：1、 Politicians say it could lead to a dissolution of parliament.政客们说这可能会导致...