查询词典 pre-existence

Moreover, they are not suitable for gears manufactured by different cutting tools. Based on gear generation principle, a new method to establish accurate 3D solid model of cylindrical gear by mechanism function of Pro/E is proposed. Taking the manufacture of spur-gear with pre-grinding hob as an example, this method is introduced in details and the accurate 3D solid model is set up.

以范成法加工齿轮的原理为理论基础，介绍在Pro/E平台下利用其机构模块的"轨迹曲线"功能精确构建各种刀具加工出来的渐开线圆柱齿轮齿廓曲线的方法，并以磨前滚刀加工直齿圆柱齿轮为例，详细介绍该方法的使用步骤，构建其精确的三维实体模型。

The results indicated, that the curves of hatching rate and normal diploid larva output showed a single peak, with the highest point at 3.4 τ0, corresponding to metaphase of the first mitotic division, the results were obtained irrespective of the different pre-treatment water temperatures, thus confirming the veracity of measuring heat-shock timing by τ0 and the wild applicability of this method in cyprinid and also suggesting a new way to the operations of induced gynogenesis in related fish.

结果提示了以τ0单位度量热休克处理时机的准确性以及该优化方法在鲤科鱼类雌核诱导操作中的通用性，从而为相关鱼类的雌核发育操作提供了有价值的资料。

In the pre-Revolutionary era, the dandified British macaronis scoffed at the colonialists, and called them Yankee Doodles.

就管这般又贫又脏的殖民老百姓叫' Yankee Doodles' (意指他们是土包子或乡巴佬)。

It is important and necessary to understand the structure and characteristics of the system, and to identify the dangerousness of the system so as to provide pre-term preparation for safety evaluation.

弄清系统的结构和特征，辨识系统的危险性，从而为安全性评价工作做了前期准备。

Darin Erstad's mystical anti-injury pouch, Patrick Roy's conversations with the pucks, Jason Terry's game-shorts-as-pajamas bedtime habit, Pelle Lindbergh's ubiquitous orange t-shirt, Caron Butler's pre-game Mountain Dew bath...the general rule is this: If you're winning, don't change anything .

达林·厄斯特德的抗受伤口袋，帕特里克·罗伊与小妖精的谈话，贾森·特里把球衣当睡衣穿的习惯，佩莱·林德伯格无处不在的橘红色的T恤，卡隆·巴特勒赛前用山上的露水洗澡……原则就是：如果你要赢得比赛，就不要改变任何东西。

It also asks you to enter a pre-allocated size for the database and transaction s.

还会让您为数据库和事务输入预分配的大小。

It also asks you to enter a pre-allocated size for the database and transactions.

还会让您为数据库和事务输入预分配的大小。

It displays the current local times of all selected cities with automatic time-zone and daylight-saving adjustments, pre-set alarm notifications, forthcoming holidays, and other location-specific information such as sun and moon rise and set times.

它显示当前的本地时间所有被选中的城市，自动时区和日光节约调整，预先设定报警通知，即将召开的假期，和其他特定位置的信息，如太阳和月亮上升和设置时间。

In the pre-Qin period, a dayspring of Chinese historical civilization, Many elements of culture and civilization had been occurred...

在先秦这一中国历史文明的开端时期，有许多文化和文明因素都经历了从无到有、从小到大、从简单到复杂、从萌生到成熟的过程。

In the pre-Qin period, a dayspring of Chinese historical civilization, Many elements of culture and civilization had been occurred from nothing to being, from small to big, from imperceptibility to intricacy, from original to mature.

在先秦这一中国历史文明的开端时期，有许多文化和文明因素都经历了从无到有、从小到大、从简单到复杂、从萌生到成熟的过程。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。