解释letter of transmittal什么意思

解释letter of transmittal什么意思 letter of 请翻译 A vacumm, which is the absence of matter cannot transmit sound. 英语翻译letter of indemnity letter of concern是什么意思? letter of notice是什么意思 letter of credit是什么意思 captioned letter of letter of recommendation作文 letter of exemption是什么意思 letter of engagement是什么意思 letter of delegation是什么意思 letter of admisson letter of guarantee是什么意思 letter of undertaking是什么意思 letter of authorization是什么意思 letter of interest是什么意思 letter of undertaking是什么意思