炭黑是不透明的,可以防止辐射热传到推进剂内部.Carbon black is an opacifier which prevents radiant energy transmission to the interior of the propellant.研究了纳米炭黑水泥砂浆的导电性和电热特性.Research of the nano carbon black cement mortar electrical and electro...
学校的训谕我们一直铭记在心,受益不浅.We have stored in our mind and learned a lot from the school instruction.命令的动作或例子; 命令, 指令或训谕.The act or an instance of enjoining; a command, a directive, or an order....
Formally approves a document by affixing a signature.以签名的形式正式批准文件.Forfixing , insulating , shock affixing parts or screws of many items such as appliances, stereos, and eyeglasses.电器、音响响 、 光学学、电脑等的零件 、 螺丝固定绝缘 、 防震与接著.Ann...
The owners of the store have stepped up customer mailings.店主们加大了对顾客的邮寄宣传力度。The seniors organizations sent out mailings to their constituencies.老年人组织向各自的会员寄送了邮件。Please tick this box if you do not wish to receive such mail...