可叫牌的

C a single raise is moderately constructive when responding with a weaker fitting hand, bid one notrump planning to rebid two of the major, a sequence that could also show 6-9 HCP and a doubleton fit

c简单加叫为中度结构性当持弱牌的支持时，可先应叫1NT然后在二阶叫回原开叫高花，若持6-9 HCP的双张支持也可用同样的叫法来表示

D a double raise is invitational with four or more trumps with equivalent values and only three trumps, respond one notrump planning to rebid three of the major after a minimum new-suit rebid

d跳加叫为邀请力量且有4张以上的支持持相同牌值且仅有3张支持时，可先叫1NT然后在低限新花再叫之后跳叫至三阶开叫高花

The newly developed bidding cards and special cards are made of foreign-built plastic materials that are high in strength and elasticity, not easy to break in winter time and washable in water.

新开发的塑料叫牌卡、塑料专用牌均采用进口塑料片材，据有强度高、弹性好，在冬天使用不易破裂也可在水中清洗。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。