rate和price哪个好
股市常识中ROC的计算方法是什么？
股市常识中ROC的计算方法是什么？
ROC(Price Rate of Change)又称变动率指标，乃以今天的收盘价比较其N天前的收盘价的差除以N天前的收盘（本质其实是N日K线的涨幅），以比率表示之，此指标经由Gerald Apple 和 Fred Hitschler 两人于Stock Market Trading Systems一书中介绍，采用12天及25天周期可达到相当的效果。
coupon词源？
coupon词根词缀词源解析:
前缀co(共同) 词根upon(上)→共同拿赠券去麦当劳。
n.息票配给券(购物)票证(购物)优惠券(常为剪自报刊的)参赛表，订货单
例句
Interest rate movements affect the bond#39s price not the coupon.
利率的变动影响债券的价格而非息票。
变形
复数形式是coupons
usdchsh是什么意思？
usd cash
美元现金
例句
1 The exchange method: USD cash in advance.
认购方式：美金现金认购。
2 The exchange rate for USD to RMB is the days purchase price of USD cash in BANK OF CHINA.
美元同人民币兑换比率以当日中国银行美元现钞买入价为准。
3 If you cant send the original document with certificate of origin, please transfer us back the 30% amount ( 855,-USD) cash that we paid earlier to you.
如果你们不能提交单据原件和原产地证书，即请用现金退还我们先前交纳货款的30%（855美元）。
英文标书怎么写？
标书相关文件以及所有往来文件应为英文。
投标人提交的标书应包括以下内容：（1）These Instructions to Tenderers, Forms of Tender, Conditions of Contract, Appendix to conditions of Contract and Specifications； 投标须知，标书表格，合同条款，合同附件以及规范文件。
（2）Tender Security； 投标保证金（3）Priced Bills of Quantities； 工作量清单以及价格（4）Qualification Information Form and Documents； 资质文件（5）Alternative offers where invited and 要求的备选方案（6）Any other materials required to be completed and submitted by the tenderers. 需要投标人填写和提交的所有文件资料。The tenderer shall fill in rates and prices for all items of the Works described in the Bills of Quantities. Items for which no rate or price is entered by the tenderer will not be paid for separately when executed but shall be deemed covered by the other rates and prices in the Bills of Quantities. All duties, taxes, and other levies payable by the Contractor under the Contract, or for any other cause relevant to the Contract, as of 30 days prior to the deadline for submission of tenders, shall be included in the tender price submitted by the tenderer. 投标人应填写工作量清单中提到的工程所包含的项、单价以及价格。