In view of the possible problem of frequency conversion adjustment air compressor air valve working condition, this article carries on the mathematical analysis and the simulation to air valve when low frequency working,the lower frequency limit causes the compressor air valve normal work and does not have the detention closure had been determined.
针对应用变频调节的空压机气阀工作状况可能产生的问题,对空压机在低频运行时的气阀进行工作特性的数学分析与模拟,确定了使压缩机气阀正常工作及不发生延迟关闭的频率下限,对变频调节压缩机频率范围选择有一定参考作用。
The lower frequency limit was determined when the compressor air valve works normally and does not presents delay closure.
对空气压缩机在低频运行时气阀工作特性进行了数学分析与模拟,确定了使压缩机气阀正常工作及不发生延迟关闭的频率下限,可供变频调节压缩机选择频率范围作参考。
The methods for calculating low limit frequency and coupling capacitance are discussed in detail.
详细讨论了下限频率和耦合电容的计算方法。
acceptance rate [Home Ownership Scheme]
认购率〔居者有其屋计划〕
A compare research of volatility between call-warrant and put-warrant based on GARCHmodel;
基于GARCH模型的认购权证与认沽权证波动率比较研究
scrip subscription
认股, 认购, 预约
Empirical Research of the Fluctuation Relationship Between Call Warrant s Premium Rate and Shanghai Composite Index;
认购权证溢价率与上证指数波动关系的实证研究
He said the threat of hostile takeovers would keep South Korean companies alert to the constant need to become more efficient.
韩德洙表示，敌意收购的威胁将使韩国企业保持警觉，认识到自己需要不断提高效率。
And growing incomes, greater levels of employment and what was widely perceived as a giveaway Budget are all factors behind the shopping boom.
收入增加、就业率上升以及被普遍认为是免费赠送的“预算”都是影响购物繁荣的因素。
covered warrant
备兑认股权证,备兑认股证,回购认股证
Research on Trading Efficiency of Procurement Negotiation and Procurement Auction;
谈判采购与招标采购的交易效率比较
ratio of trade account payable to purchases
应付帐款对购货的比率
accounts payable to purchases ratio
应付帐款对购货比率
80,000 sets with a discount rate of 20% .
订购80,000台，折扣率20%。
One should not rush headlong into buying stocks.
不应轻率购买股票。
To guarantee the purchase of(a full issue of stocks or bonds).
认购保证购买(全部发行的股票或公债)
XR, x.r. [ex -right]
无优惠权认购新股，除权［
option in respect of any unissued shares
认购未发行股票的特权
Each of us subscribed for 500 shares.
我们每人认购五百股。
That man subscribes for1000shares in a new company.
他认购新公司股票1000股。
Over5, 000shares have already been subscribed for.
已有五千多股被认购。
