Defining the local column as DATE is convenient because it allows predicates that involve DATE literals, but does not require casting functions (which tend to impact performance).
将本地列定义为DATE类型比较方便，因为这样可以允许涉及DATE文字但是不需要覆盖函数(对性能有影响)的谓词。
The use of vibration and impact to the mold casting equipment in separation of molding sand and casting.
利用振动和冲击使铸型中的型砂和铸件分离的铸造设备。
The wear resistance of casting composite medium manganese steel has been studied under the condition of impact abrasive wear.
研究了铸造复合中锰奥氏体钢在冲击磨料磨损条件下的耐磨性能。
The green sand mold with even density and proof of the impact of liquid metal is one of the critical factors in the production of quality casting.
紧实度均匀、能抵抗金属液体冲击的合格砂型是保证铸件质量的关键因素之一。
It is shown by comparisons that PM temperature press technology has a strong impact on casting, die forging, PM forging technology.
经比较分析认为，温压技术将对铸造、模锻、粉末锻造技术产生冲击。
The main part of light USES high press die-casting aluminum. It has the features of impact resistance and corrosion attack.
灯体主要结构部件采用高压铸铝压铸组成，具有抗冲击、耐腐蚀的优点。
Applicable to auto mould casting mould casting, heat resistant steel, high impact abrasion of the drawing and pressing machine, welding parts repair coating can be processed.
适用于汽车模具，热坯模，铸钢模耐中高温冲击磨耗之机件延压部分的修补，焊层可加工。
Adopting the method of the solid-liquid composite casting, the new type anti-impact and anti-wear hammer head, in witch the soft material and hard material are alternately arranged, were made.
采用固-液复合铸造的方法，制造出一种软硬材料相间、抗冲击及耐磨性能高的复合锤头。
Cooling slab is an important link in the process of the entire bloom continuous casting production, it has a direct impact on the quality and output of billet.
铸坯冷却则是整个大方坯连铸生产过程中的一个重要环节，它直接影响铸坯的质量和产量。
Hazelett strip casting process is already successfully used for producing slug for impact extrusion.
哈兹·列特铝板带连铸连轧工艺已被成功地用于铝和铝合金冲击挤压用坯料的生产。
Light body parts are the main high-pressure aluminum die-casting structural composition, with impact and corrosion resistance characteristics.
灯体主要结构部件采用高压铸铝压铸组成，具有抗冲击，耐腐蚀的特点。
This change will have little impact on dps casters, since they are basically always casting.
这个改动对于法系DPS来说几乎没有影响，因为他们就是在不停的施法。
This change will have little impact on dps casters, since they are basically always casting.
这个改动对于法系DPS来说几乎没有影响，因为他们就是在不停的施法。
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