拉丁方

Nine cutting tests on sand in wide best sanding machine with three belts were conducted by orthogonal design.

应用正交设计方法，在三砂架上砂式宽带砂光机上进行了9次试验；应用拉丁方表进行计算，得到砂光机最佳工作状态，从而推广到木工机床普遍应用，以提高木材的加工质量。

The experiment was designed as a 5×5 Latin square with five Chinese Merino male sheep with rumen and duodenal cannulae to examine the effects of supplementation Tween 80 and Tween 20 on ruminal fermentation and nutrient digestibility. In the experiment, the animals were given a basal diet consisting of compound feed and corn straw.

选取装置永久性瘤胃瘘管和十二指肠瘘管的中国美利奴绵羊，采用5×5拉丁方试验设计，在饲喂玉米秸秆绵羊日粮中分别添加5，10g/d Tween 20或3， 6g/d Tween 80，以空白为对照，以研究不同水平的非离子表面活性剂Tween 20和Tween 80对绵羊瘤胃消化代谢的影响。

Experiment(2): Six one years old gansu high mountain fine wethers(avg wt 25~30 kg) fitted with permanent ruminal and proximal duodenal cannulae were assigned to double 3×3 Latin square design, to measure the apparent digestibilities of nutrients in rumen, postrumen and total tract and the apparent nitrogen retention as well as the dynamic changes of the rumen metabolic parameters in wethers fed with diets which SC:NSC ratio were respectively 1.57, 1.95 and 2.29.

试验：选用6 只1 岁左右，体重25~30kg，装有永久瘤胃瘘管和十二指肠近端套管的甘肃高山细毛羯羊，采用3×3 有重复拉丁方设计，研究了SC： NSC 比例(1.57、1.95、2.29)饲粮的瘤胃内、瘤胃后和全消化道营养物质表观消化率及氮表观存留率，以及瘤胃内环境参数的动态变化。

Four steer with permanent rumen and cannulas were chosen and arranged in a 4×4 latin square trial.2%,4% and 6% of long-chain fatty acids calcium was supplemented to the base diet.

本试验选用4只装有永久瘤胃瘘管的羯羊，采用4×4拉丁方设计；对照组羊饲喂基础日粮，3个试验组在基础日粮中分别添加脂肪酸钙2%、4%和6%。

Four sheep with ruminal and duodenal cannulas were used in a 4×4 Latin square design to study the effects of rumen protected fat on the function of rumen metabolize.

选择体重相近并安装有瘤胃瘘管和十二指肠瘘管的小尾寒羊4只，采用4×4拉丁方实验设计方法，研究了脂肪酸钙、植物脂肪粉和硬脂肪对绵羊瘤胃PH、氨氮浓度、采食量、营养物质消化率、血液生化指标以及瘤胃营养物质降解率的影响。

In 3×3 Latin square design, three wethers of Inner Mongolian White Cashmere goats (25~30 kg) with the same father, fitted with permanent cannulas at the proximal duodenum, and with carotid artery, mesenteric and portal venous catheters were used to investigate the effect of absorbable amino acid pattern in the small intestine, which were M, M90+C10 and M80+C20, on absorption and metabolism of amino acids in IMWC goats.

选用3只体况良好，体重25～30 kg的2周岁内蒙古白绒山羊半同胞羯羊，安装永久性十二指肠近端瘘管以及门静脉、肠系膜静脉、颈动脉、颈静脉慢性血插管进行试验。采用3×3拉丁方试验设计，3个试验处理的十二指肠氨基酸灌注模式分别为M、M90+C10、

Four 4-month-old wethers fitted with heal cannulas were fed a constant concentrate and a hay in baled, long chopped (4~6 cm, LCH), short chopped (1~3 cm, SCH) and fine ground (0.5 cm, FGH) form in a 4×4 Latin square design to evaluate the effects of forage particle size on nutrient digestion in the hindgut and total tract of sheep.

为探讨粗饲料颗粒度对反刍动物饲粮养分在后肠道及全消化道消化的影响，本试验将饲粮中的粗料青干草进行整草、长铡草（4~6cm，长草）、短铡草（1~3cm，短草）和粉碎（0.5cm，粉草）4种颗粒度的机械加工后进行定量饲喂（4×4拉丁方试验）。

Randomization, blocking, sample size determination, factorial designs, 2^p full and fractional factorials, response surfaces, Latin squares, split plots, Taguchi designs.

实验设计：实验设计：随机化，区组设计，抽样规模的确定，析因设计。完全的和部分的析因设计，反应曲面法，拉丁方，裂区法，Taguchi 设计。

To evaluate the effects of dietary NDF levels on apparent nutrients digestibility of mutton sheep, four 4-month-old crossbred (Small-tail Han sheep×Poll dorset) wethers were fed four iso-caloric and iso-nitrogen diets containing different NDF levels (30%, 35%, 40% and 45% of DM) with a limited feed intake in 4×4 Latin-square design.

为了测定不同中性洗涤纤维水平对肉羊日粮养分表观消化率的影响，选用4只体重相近［（23.5±0.6） kg］的4月龄杂交一代羯羊，采用4×4拉丁方设计进行试验。4种试验日粮按等能等氮而NDF水平分别为30%、35%、40%和45%进行配制，定量饲喂。

Experiment 1: Three crossbred wethers fitted with permanent rumen fistula were chosen to measure the effects of different processed way of diets on parameters of rumen metabolic and digestion and metabolism of nutrients in sheep.Treatments were designed as a 3×3 Latin square with 16-day periods.Sheep were allotted in one of three diet-treatments,which were complete diet pellets , ground concentrate and cut coarse fodder and no ground concentrate and cut coarse fodder.

试验一：选用3只健康，并安装永久瘤胃瘘管的杂种羯羊，采用3×3无重复拉丁方试验设计，就制成颗粒料的全混合饲粮、粉碎的精料+铡短粗料饲粮及整粒谷实+铡短粗料饲粮对绵羊瘤胃内环境以及养分代谢的影响进行了研究。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。